Start a business. 10 BTC is a nice amount and should cover a lot of BTC small business costs, but if not, it would make it easier to get a loan.
I'm not sure what the business would be though.... Stock trading with a BTC investment?
If I have 10 BTC I buy a car

5800$ car... dunno...
better ant miners or hype invest

No this is too much for that

it's just suppose you have 10 BTC actually there will be no one who will give you 10 BTC. so if you have a plan for 10 BTC and if the plan was overcooked and you're sure to make a profit you can do the borrowing/loan. many people would lend capital if you can give them confidence