I feel you, some things went wrong, but I did manage to root my phones still, but it gets trickier from phone generation to phone generation… I made a good video now that fix the “problem” (it is not a real problem as it is already fast enough) and it works only if you are rooted 🙁
In this video https://youtu.be/64OAKU2McsM I compared the now default governor “walt” vs “schedutil” vs “performace” and only performance could really benchmark the CPU as clocks are maxed out all the time, you can see that in the video. “schedutil” was the default governor in my previous phone Note 20 Ultra.
Also in the phone list you can add the performance governor with ~350 realtics https://imgur.com/ZSgzDyx that’s without video recording.