Europoor here. Where do I actually learn options theory before I blow up my account?

What's up boys. I know 99% of the gains here come from blindly YOLOing 0DTEs. Lately, it seems like you can literally buy calls on any random ticker with "AI" in the name and it's free money. But I’m a European with a tiny bankroll, and I can't afford to just guess when the music is going to stop. Lurking here has taught me a lot, but I want to actually study the real theory behind trading and options (Greeks, order flow, price action mechanics). Where do I start studying so I at least know exactly why I'm losing my money when a play goes against me? Drop your best book or resource recommendations. No YouTube gurus. Help a poor European guy