I've been using my Bitcoin on buying stuff on a online shop, it's the easiest form of payment of all. It's made possible through the third trusted party related to the shop. All kind of product could be bought by Bitcoin, I've been using it since last year. Though it's possible, I still not prefer to much spending since I like to buy and hold it for longer investment.
There is also another third-party trusted exchange platform which is local that can offer various services and exchanges. Before, I used to convert my bitcoins to game currencies but I realized its true worth when its price suddenly skyrocketed from $4,000 to $15,000 back inn 2018. Learn from my mistake, use your bitcoins for emergency purposes only as you are losing more value in the long-run.
The gift and curse of crypto are non reversible transactions. Sellers love not having to deal with chargebacks and fraud attempts. But on the other hand, buyers have to be extremely careful with who they are dealing with because once the crypto is sent it can't be recovered!
There are local exchanges that can be trusted when dealing with these kinds of transactions. If you have trouble trusting, there are alternatives that accept cryptocurrency as a payment in some stores and services.