What type of oil should I use for my car

5w30, you can use conventional or synthetic. And I believe it also will tell you on the oil cap and/or in the owners manual.

Cause YouTube said it don't matter and that you can use the cheaper brand oil instead of the $10 oil ....and I was trying to make sure that's y Tom

Now can you answer that

Depends on the engine size. Yes for a 3.5L it is 5W-30 but if you have a 2.4 or 2.5L engine it is actually OW-20. Source: https://www.searchforparts.com/oil-change/toyota-2010-camry-2.4l-b-2az-fxe