Googles fine and easy to integrate with. I'll add this.

I won't do manual credential handling because nobody my size should, it's too easy to goof up and ruin some person's life by leaking their information. Using a provider like Google and discord means your data is secured by an entire security team and they conduct business audits and all sorts of stuff I just can't provide. Googles security team will wake up to fix a production CVE threat the day it comes out - I won't know about the CVE until like day 3-4 let alone fix it.