It is normal that when you convert your crypto into fiat taxes will get in the way. There's no way you can get around it or else it would be considered illegal. If you want it to be converted into legal fiat, then do your job and just pay the taxes. There are still some other ways but still there are fees, it's just that the value is lower compared to taxes. Whenever you are investing in crypto, you should study already how you can convert it into fiat in a more convenient and low fees way so that you would not lose too much money in the process.