Anyone know where i can mass download old games?

I've tried downloading rom sets but the download speeds are terrible and barley works for anything over a gig. I'm mainly looking for gbc, gba, n64, ps1, and sega gen and maybe more console libraries later on but for now I'm just looking for a place to download the full library of those consoles I've already got nes snes and gb but I cant find stable downloads for any others. Any responses are greatly appreciated!

"once you stop caring about everything life just gets better"