Sorry about the bad experience. If you decide to give it another try, it's worth spending a few hours on some intro tutorials first. I recommend MangoJelly on youtube.

FC is not a program you can just open and start using, especially if you have zero experience with parametric modeling.

If you're serious about design, modeling, engineering, etc., and want to own your own data, it's worth investing the hours to learn it starting from the very basics.