Specially in which groups you want to joined i mean to finding bounty campaign or trading signal.
For bounty:
1. https://t.me/WapinterBounty
2. https://t.me/BlockeyeBounties
3. https://t.me/amazix
4. https://t.me/joinchat/Fx2VP043eQFsk0yON2I65Q

I don't think trading signal group is very helpful. Although i following only one trading channel:
1. https://t.me/cointredingsignal