Before you use these services (given your circumstances) you are probably best to find a Bitcoin to Monero exchange on kycnot.me, then from there swapping to xmr, and using
agoradesk's monero mirror, local xmr, or swapping back to btc and using agoradesk. Monero is a protocol built for privacy and in a situation like this, it might help you to find some additional privacy than just using the services with the coins you have. You aren't doing anything wrong by achieving some privacy here, using a privacy protocol for its intended purpose might save you troubles if any troubles are related to your coins. if LE already picked up the guy though, you mightn't even have anything to worry about. Good luck
I'm not sure did I understand this bolded part correctly. Are you saying to exchange BTC to XMR P2P and then back to BTC? I tried searching for monero mirror, but I didn't find anything useful.
If you intend to sell, then you may swap to altcoin from DEX and sell it. I had used TrustWallet to swap my coins, like from BNB to Bitcoin or Bitcoin to BNB. So it does break the chain and transaction history. For example, if you want to sell, convert your bitcoin to ETH and sell through P2P or whatever you like. If you still want to hold Bitcoin, then deposit ETH to centralised exchanges and make an exchange for Bitcoin. Then you can withdraw Bitcoin from the exchanges. Keep in mind that it does break all the previous transactions, but it doesn't assure your privacy when you are using centralised exchanges. They might know that you own the address, but you will get fresh coins from the exchange.
Is it possible to exchange coins directly in TrustWallet or it's just a multicoin wallet?
This is interesting. What if btc you received from a long time ago wasn't worth much back then and the person or exchange you buy it from had issues?
The thing is if you withdraw it from a gambling site, well what if it was some person who deposited that btc in a gambling site and now uses that btc to pay you?
Yeah, I don't know where the guy got them back then, and that's the reason why I want to "unlink" them from him. I don't want to come to a situation where I sell them P2P, a buyer has CEX address and they block the transaction.