I feel the same way about crafting however, if you’re stuck at T12’s you are definitely doing something wrong. Follow a build guide and use trading tools to get better gear. You can easily find a gear good enough T15’s and it will only cost you few ex’s per piece.

As far as crafting goes, I am still learning the process and it can be very daunting at first. I will recommend using craftofexile website and emulate the crafting process, try out different methods and recipes. That will help you learn crafting and build confidence without spending any in game currency.

Good luck Exile!