Why have I been banned and where can I find out why?

Literally all my post was “ silver ranked play, be chill” I even reported a bunch of spam bots offering paid services in there whilst I was waiting because that’s what 90% of the Lfg is but Microsoft dosent do anything about that

The enforcement site would be the only place with that information. If it's not eligible for an appeal, all you can do is wait it out.

As you mentioned using LFG, keep in mind that an LFG post is only for looking for others to play a game with. They should essentially be "I'm looking for x amount of people to play this game". Anything other than that will typically result in a suspension.

sorry once you are banned they are not reversed and I am pretty sure you have posted this before again and again, you were told where to go to find out why you were banned but that is all you can do, find out why you were banned. also do not create duplicate
and redundant threads it just pushes down those who need help as well thanks.

I have tried waiting to see if I can appeal but it doesn’t change at all it’s been a while now since I lost the account and when I talk to support they can’t even check for me so I’m stuck not even able to check why I am banned I have been in multiple chats to try and find out why I was banned but still no final answer on why

Or, check the email associated with the account.