Tools get stuck in the eyedropper

With that latest explanation it is pretty obvious you have a faulty graphics card with your RTX3050. I would either uninstall/reseat the card and then reinstall the drivers or contact the manufacturer to see if there is any graphics card specific recommendations they have.

So, I followed the "Troobleshoot Photoshop graphics processor" thing and finally I "disabled the less powerfull graphic card" like it is written, namely my Intel graphic X card. Photoshop uses my Nvidia 3050 Ti usually, but when I do that (that's not the first time I disable the Intel) it doesn't use any graphic card at all, like if it was my Nvidia that was disabled (Yes I did the "Manage 3D settings" and stuff, I followed all steps). But this time instead of letting it down I did go talk to the "Adobe Support" (I already talked to them but not about the gpu thing exactly), I show them the "troobleshoot photoshop" etc page, explain to them everything, tell them that at the "disable the less powerfull gpu" thing it doesn't work correctly because photoshop doesn't even recognize my Nvidia anymore and a technician has remotely takes my computer.

He has enabled my Intel graphic card and said: "Now photoshop recognises your Nvidia again, your issue should be solved". I told him "No, we just went back to the beginning of the problem. I would like photoshop to recognize my Nvidia after I disabled my least powerful graphics card like in "Troobleshoot photoshop" thing" and he stopped responding to me. 

So if somebody here can help me with that maybe, it would be really nice

Yes I really think I have a gpu issue too (I don't know if it has something to do with my tools getting stuck issue but definitively with another problem I have). I have already spoken with the support and a technician controlled my computer remotely, he didn't even know that when we use photoshop with a mouse there is no pressure anymore ._. and stuff like that, it was a very bad experience so I will just stay like that for now and keep seeking in forums but thank you for your response

The fact that you followed the directions outlined on this page and deactivated the lesser card and it got worse, leads me to think you are having issues with your newer RTX 3050.

https://helpx.adobe.com/photoshop/kb/troubleshoot-gpu-graphics-card.html#multiple-gpus

The other solution you can try is to go direct to Adobe Support.

Go to this page, make sure you are logged in with your Adobe ID used in PS and click the chat bubble  (bottom right) to connect with a Support specialist. They can remote in to your PC to review and hopefully resolve the issue directly on your machine.

https://helpx.adobe.com/support.html

"This site lists the 2019 direct download links from Adobe" Thank you very much !

Ah I get why you told me that the issue is worst that's because what I said (I reread the discussion) no it was worst because that time I didn't turn off "Spring-loaded Tool Shortcuts", but yeah with that it's better but still here

This site lists the 2019 direct download links from Adobe:

https://prodesigntools.com/adobe-cc-2019-direct-download-links.html

"Your lesser Xe graphics card is still showing as active - did you go back and reactivate that card?" Hello, yes I reactivated it since it doesn't solve my issue and as I showed, when I deactivate my graphic card the lines become all jagged

"You also posted that you downloaded a copy of 2019 from the internet, but then "subscribed again". It may be that all the different versions of PS are making the issue worse." It didn't get worse, the issue was just like before

but when I uninstall photoshop I always use the creative cloud cleaner tool and I make sure to manually remove the files that stay

"Sorry for the french, since your Configuration information is in French, it means that your computer is, therefore it made sense to use that language..." Don't worry and yes I speak french but I'm used to reading solutions in forums in english so reading it in french is hard to figure out exactly with all the things I use to read

Does anybody know how I can get back to photoshop 2019  with my subscription because here I'm waiting to find a solution to my issue but until that, I can't do anything and I feel frustrated

Sorry for the french, since your Configuration information is in French, it means that your computer is, therefore it made sense to use that language...

You also posted that you downloaded a copy of 2019 from the internet, but then "subscribed again". It may be that all the different versions of PS are making the issue worse.

I would recommend uninstalling all copies of PS, then running the CC Cleaner Tool to remove resources, then reinstall Creative Cloud Desktop and install the recent version of PS to get you to a stable starting point, then lets look at resolving the issue.

https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html