I'm super new to this as well, so I completely relate.  As a parent when one of my kids are getting angry at a video game or whatever I tell them "get up and walk away.  You're obviously not having fun and when you aren't having fun you're just going to dig that hole of frustration and anger deeper" and that applies here.  If you keep trying something and just can't get it see how you can alter it or maybe switch to something else entirely that is less complex.

This has been a struggle for me as well, but I can see the daily progress a little bit at a time, so I know it's all working.  As stated before, simplify the pattern or slow down the speed so that you can do it and then over time it'll just naturally get better.

I train in Muay Thai (fighting style) and with new folks I always say "speed and power will come with time.  Focus on your form first and the rest will fall into place".  That applies here too, have patience, but also know your limits and what is helping to challenge you vs outright destroying you and removing the fun from the situation.