Is there a way to use another GPU driver without messing my installation?

[Fabby]

@mohamadali-halwani

Why are people editing my post?

Because you posted your question in the wrong category: Your problem is unrelated to KDE Plasma and is purely a Graphics & Display issue.

@mohamadali-halwani

I would like to have that patch in my machine.

Then take a Cold System Backup:

[HowTo] make a crash-proof backup in Manjaro for your entire system

Difficulty: ★★☆☆☆ If you follow the tutorial completely, you will be able to create a backup of your entire system not only limited to Manjaro, but also including Windows, RHEL, Ubuntu, … and whatever else you might have installed on your system! Even if you replace your HDD by an SSD, your HDD crashes, your entire system gets stolen, … you can always restore a Cold System backup to an identical system (You cannot restore E.G. a Dell XPS onto a Dell PowerEdge and then expect that to…

and then just do it and if you mess up, restore the system backup!