Facebook, Twitter, Reddit and other social media resources are excellent for connecting with other players, following campaigns, and discussing D&D and other RPGs. You can connect with local players and games as well as following the official sites for the RPGs.
Use Roll20 Looking For Group app to find games online. The app provides tools to limit and filter your search by keywords, content, and groups that welcome new players.
Discord is an all-in-one voice and text chat service for gamers. The service hosts numerous D&D servers for anyone with a Discord account. You can search for D&D servers through Disboard, an app linking Discord servers and people. D&D sessions are played remotely in Discord.