How can I actually get Google Cloud Credits? (Too much is never enough)

I’m growing a small SaaS. And cloud costs are starting to hurt. I keep hearing about founders stacking $100-300k in Google Cloud credits, but all the advice feels vague or locked behind big-name accelerators.

Where did you actually get credits?
Any creative hacks or things to avoid?
If you’ve cracked this, I’d love to hear what worked.

And if you’re still figuring it out too, just drop a comment. If I’ve gathered some useful stuff, I'll be happy to share.