Things like this will help. There are more, but extra settings and needless things make it run slower.
In the first video, guy says never to 'defrag' an ssd. Windows 'trims' AND SOMETIMES 'defrags' ssds (something to do with keeping the FAT organised, IIRC. Windows is smart enough to know when to do this. It's a part of maintenance that runs in the background.
He disables automatic Windows Updates. This is moronic. MS is constantly fixing bugs (not even talking about malware, yet), and they distribute firmware updates for devices made by Intel and others. When's the last time anyone here did manual firmware updates for, say, the CPU microcode, or the wifi hardware?
After seeing some of the debloat talk, I stopped watching. That stuff takes up disk space, but makes no difference to most users. (Full disclosure, I have a list of commands to debloat, and I uninstalled a lot of stuff on our 4 main PC's, once. Once.)
The number one tip for faster Windows: go from HDD to SSD (if applicable).
Tip two: get a newer CPU. Clockspeed is king.
Tip three: overclock the CPU (must have a CPU and motherboard that let you do this).
I built an overclocked i7 4790k, on the top Asus board at that time, and have three SSDs in it (OS, OS swap, and Lightroom swap dedicated).
It measures about twice as fast as my new MS Surface Book 2 *laptop*. I notice zero difference in web surfing or spreadsheet use. (Or Room Equalizer Wizard analysis of speaker measurements, a fair CPU hog).
I also have an MS Surface Go, a tiny, full-windows 2-in-1. It measures about 6 times slower than the 4790k, and it actually *is* noticably slowing in loading a dozen Chrome web pages at once, but otherwise feels just as fast while surfing.
If you notice a difference after 'optimizing' your PC, it's almost certainly nothing more than expectation bias.