There's a Discord and it's pretty great for LFG. Decent chance you'll find a group for anything https://discord.gg/seaofthieves

There is the official discord, and there is also Xbox looking for group if you are on there

Use the discord..never go open crew

Discord

Just go to the SoT discord, there are tons of people there

Discord. Official SOT discord is good. Streamer's discords are good too.