Is there an exchange in existence which can help me buy things more than just cryptos? I mean more of a platform which let’s me buy stuff with cryptos.
When you go to a drug store you don't expect to find machine parts for sale, right?
Exchanges are .. well.. currency exchanges. In this case crypto currency exchanges.
If you want to "buy stuff", you have to go to shops that accept crypto currencies (or, more exactly, shops that use payment processors which accept crypto currencies).