F1 seeds

I used to only buy F1 cucumbers. Because I’d never had any luck or didn’t like any of the none F1s I’d previously tried. Until you introduce me to Beth Alpha. Now I’m trying to avoid all F1s and I’ve been trying to avoid the big boys for ages. Avoiding giving them money that is, I’m quite happy to grow any of there seeds if I acquire them for free   . Also trying to save as many of my own seeds as possible. Still a lot to learn in that department.