I'm working on a webapp that I'd like to get sound effects for and not sure on the best approach. There seem to be a lot of freely available sound effects to be found on freesound.org or zapsplat, but there a thousands to look through and there's a lot of variation in quality.

I'd be willing to pay as well if I found something that was fitting enough for my use case.

Does anyone here have experience finding or buying sound effects and can recommend a website for it?