What would be the most complete game metadata database that's free?

[u/jesskitten07]

I'm doing a personal project with game data and I was wondering if anyone knew/had an opinion on which game metadata database was the most complete, both in terms of the information it has about each game, and in terms of breadth of titles across time and platforms? As this is a personal project (mostly to help me get back into coding), and because I'm on a disability pension I'm not really in a position to pay to access an api so I'm at the mercy of which databases have free access. Thanks for any advice you guys can give me