I've downloaded Mutiny wallet and its my first time interaction with any Bitcoin wallet. So far everything's good and I've created wallet, linked here with SN and just about to withdraw 15k sats. A message popped up that I can only Withdraw +100k for the first time because there's a need to create your own channel or else you can join a federation. I've understood their point.

My question is about joining a federation. How can I actually know that the federation I join is trustworthy?

Should I be concerned about joining an unknown federation there?

Please reply with a view that this is my first time experiencing all this stuff.

Thanks in advance...