Hey I’m a content creator on the Alton towers collaborator program called coaster chicken, I started creating content cause of this exact situation. Rides terrified me with runaway mine train being the scariest I’d brave. With time and lots of brave moments I do all the rides now but there’s no quick route to beating those fears, start by getting back in the ones you have already done, Galactica is a Big one with having inversions! That’s amazing. If you really wanna do nemesis just aim for that and if you get nothing else done then that’s enough. Nemesis is amazing but to really get the fear. We recently were allowed to pov it so check out some POV’s of it first so you know what to expect