Computer loads games much slower than before?

I have the following problem recently:

My gaming laptop has to load from one day to the next problems with its speed games.
Example:

Rainbow Six Siege usually starts pretty fast,
but recently, when I start the game, it takes quite a long time until something happens and then a window does not appear in which the Battle Eye is started (which normally only happened once in a while). Only every time when this window appears, the game is running only with 15-25 FPS and the mouse is super delayed (then had to always restart the game (then the window is no longer) and then everything went back to normal.

I've also been playing War Thunder for 3 weeks, and I've had the same problem with frames per second recently.
Strong break-ins

What could be the reason, because my laptop is actually up to the requirements and it worked before?

To the background of my laptop

I just use it to work and gamble before you think I have 20 toolbars in my browser (if you know what I mean)

I would be glad if someone could help me, because I can no longer play the game.

Could put on new vlt.

Search and run the Windows search for "Diagnose Computer Memory Problems". After a PC restart, a 15-minute RAM scan is performed. What is it?

How much free space do you have on your disk?

Open the task manager and look under the tab "Performance" and see how it behaves there. If you have no idea about it, upload a screenshot of it here:

And then go to the Resource Monitor and do the same.

Thank you I'll try the scan first then I'll write you ok again

Did the scan. It took a long time but no memory errors were found

How can I insert screenshots here

In use (Compressed): Available: 10.3 GB of memory: 16GB
5, 4GB (21.3MB)

commit executed: 5.8 / 18.2 GB In cache: 10.4 GB

outsourced pool: 1GB

non-paged pool 443 MB

speed: 2133 MHz

reserved for hardware 142 MB

these are the information from the task manager