Welcome to the forum!
There are two official gaming servers, one for Minecraft and one for Terraria.
https://forum.level1techs.com/t/official-l1t-minecraft-server/142672
https://forum.level1techs.com/t/official-l1t-terraria-server/157354
There’s a L1T Discord server with gaming channels (may be a good spot to get pick up games going)
The L1T crew also stream on Twitch from time to time
You can also find a Level1Techs Steam group, although I’m not sure how official that is.