FiveM licenses can accommodate up to 32 players in the game. Hosting for large groups is possible with a dedicated or cloud server. The servers are designed for FiveM which means that you won't have problems with Avast. If you're hosting for a small group, you can make use of the free FiveM server. You can access the free version on the directory on the site. However, it's not compatible with all web browsers.
https://fivem-store.com/