Who knows a site where i can download free games?

I don't want a free trial because i'll like very much that game and my parents won't buy me that game because they say that an 18 years old girl can't play games on the computer.Please help me.

Is there a site that anyone knows about where I can play free games?

I want free games that are full versions and different variety of games. I like mystery, case solving, escape room, time management games like Diner Dash, and I want to be able to download it no problem or just play online.