The crypto market is developing. And you can see many online platforms for this. there are exchanges, there are cryptocurrency exchangers. Check out their terms.
I use online exchangers for cryptocurrencies. This is the easiest and fastest way to buy and sell cryptocurrencies. To quickly select the desired exchanger, you can use the BestChange service. Here you can see the offers of different exchangers https://www.bestchange.com/bitcoin-to-paypal-usd.html for sell bitcoin and choose the one that is best for you