Hosting
When you are the GM, you are often also the host. It's generally easier to run the game when you have all of your books and supplies on hand. It's also better to host if you have players who are inconsistent - as the GM, you will definitely be there if the game is going to happen. So how does one host a game? Well, there is no "right" way, but there are pros and cons to various setups.
Table
When you think of a D&D game, you probably picture a bunch of nerds clustered around a folding table in a basement. In many ways this model is a successful one, and still the go to for many a gaming group. A table allows for seated players to see maps, etc, placed in the center, and have their own space for character sheets and dice. The table also allows players to make eye contact when RPing.
Couches
Many folks don't have a traditional living situation these days, which can make sitting around a table difficult. Sometimes the only space you have is a living room. Players sit on sofas, chairs, even the floor, and there is a coffee table or something for battles. This is nice for comfort, and simulates the table, but in many ways the personal space issue makes it hard for players to juggle their character sheets and dice. If you're thinking of the couch method, make sure folks have little folding tables or lap desks for paper and dice.
Digital
Running a game online is as seductive an idea as it is difficult to execute. There is a level of commitment necessary to run/play in any game, but when it's online sometimes the commitment is less... tangible. And there are tech issues to compete with as well. Running online often benefits from using a tool like Discord and/or an online TTRPG platform. There are numerous add-ons for Discord to handle dice rolling. Foundry Virtual Tabletop, Roll 20, Fantasy Grounds, and many more virtual table top programs exist. Many come with premade maps and icons. It's important to find a virtual table top that supports the system you want to play, and does not require more set up and configuration than you can handle.
Food
People love to eat. Snacks are a long time tradition among gamers, and form a centerpiece of most game sessions. There are some considerations that go into the food part, though. If you're running the game during a meal time, like noon, or six pm, people will need to eat. Either this can be accomplished by everyone chipping in on pizza, or doing a rotation of cooking duties, etc. Regardless, it needs to be handled. It can be really stressful to try and figure out what is supposed to be done about food if it is never discussed. It's also hard on the host if they are providing space and a meal every time. Everyone needs to be participating in the prep in some way. If the game isn't being held across a meal time you don't have to worry too much. Let players know to bring snacks. Discuss if you are going to be every-person-for-themselves or if you want to put together a communal snack collection. Make sure dietary needs and allergies are clearly communicated, and collaborate with players to make sure everyone is contributing in the way they can for their circumstances!
Time
Picking when you want to run can be more influential than picking what you want to run when it comes to getting people to show up. Things change, and often weekly games can be too much of a commitment. When it comes to monthly or bi-monthly games, finding the right day and time can be hard. Since people are already dealing with busy schedules, getting a whole group available at the same time can be more challenging than fighting the BBEG. The nice thing about a weekly game is the consistency, but it requires people to factor that time in as a part of their weekly routine. For some groups, gaming is important, and it is just what they do. For other groups, games are fun things to work in when possible.
The only solution is to communicate with your group, and figure out what kind of commitment everyone is willing/able to make. Sometimes things don’t match up between players. For example, I’d drive an hour each way every week to play in a really good game, but that game would have to be long enough to justify the drive, and would have to take place on the one day a week I could commit to that chunk of time. But I’d happily play in a twice a month game for a couple hours on an inconvenient day if it was fun and close. What people value varies from person to person, and meshing differing values across a whole gaming group requires communication.
Devices
As the host, you might have to deal with devices. Nothing is more distracting than a cell phone. But some people use their tablets, phones, or laptops as resources for their game. Many people don’t keep physical books, but rather have digital copies, or use online die rollers, etc. So how do you know when someone is looking up a spell versus reading Reddit? It’s hard. If devices become a problem, you might have to step in, as the host, and lay some ground rules. This is not always easy, but if the goal is for everyone to have a good time playing the game, then everyone needs to be willing to pitch in and make the game fun!