Board Game Arena

Is there any discord groups out there with a lot of members where you can post game invites links and find players faster?

I'm in a group called Turn Based Arena that does exactly that! It's an active and very friendly group:
https://boardgamearena.com/group?id=9983407
There's also BGA Bosspiles which runs several ladders for various games as well as a looking-to-play channel:
https://boardgamearena.com/group?id=2047909
There are probably other Discord servers for setting up games but those are the ones I know about.

The Foster the meeple discord group is great. Lots of activity and a really nice bunch of people