Need help : where can i buy Bitcoin in a halal way

Salam Aleykoum,
My question may sound silly, but I still haven’t found an answer. Do you know which platform could allow me to buy / sell Bitcoin in a halal peer-to-peer manner? And what are the conditions for that?
If a platform takes a percentage on the purchase or resale price, does it become haram?
I’m a bit lost in all this environnement, moreover English is not my native language

Thanks you for your help

Walaikum Asalam , So Bitcoin is available on every exchange . But iit would be better to buy it from BINANCE , No 1 exchange in world for crypto. But must remember to buy it via Spot from Binance not via Futures(Haram Method)