Any good website to download retro games for my PC or APK for my phone?

Recently because of so much ads on consoles having only retro games. I got tempted to download them. Before I used to own Sega games, Aladdin/claw in my laptop but recently for some reason I think these retro gaming console companies would've download them from an open source code that would allow them to patch it for different devices. I even had an apk in my old mobile having 99 games including super Mario but recently I couldn't find that APK. Please help me out guys 🙏