If platinum is all you want with this game then I think it’s okay. Those challenges are essential for fighters in this game. The toughest part are the perfect block lessons
You'll get it. I had to take a few breaks and a lot of deep breaths during the tougher ones. Just be persistent and keep at it. If a non-competitive guy like me can eventually get it, then I'm sure you can do.
Sometimes I just go by sounds lol. Looking at the screen throws my timing off. Which part of the tutorial or combo is it? You are getting general advice because your question isn’t specific.
Maybe someone can give you specifics and try to understand what you are doing wrong. Record a short clip.