So I would like to ask, is there a database in the unity asset store or a database outside the asset store that is cheap, and can handle a good game with a decent amount of requests and stuff? (My budget is $65 and below)
Hi. If you're looking for a local database solution then, SQLite is a good option, and there are a bunch of assets within your budget on the asset store. As usual, read recent reviews and make sure the asset has been updated recently. If you are looking for a hosted solution, then there are also loads of options! I've heard good things about Firebase and Google has a decent free tier on offer. Be mindful that once you exceed the allowed free usage you will be charged! Add Firebase to your Unity project hth.