Hi there! command + z and also cmd V, C and X not working nut only while using the left cmd key

Hi! I have this crazy problem.

These key combinations are not working,

but this only happens with the left command key

cmd + z

cmd + v

cmd + c

cmd + x

cmd + n

cmd + tab for toggling

(althou toggling with the command tab does not work with the right cmd key either.)

All these keys are actually working perfectly by themselves

To help solve the issue I did all I have found on the internet and here in Apple Com., but nothing has helped.

I have not installed anything in a long time and have not found any problems related to that.

-Restarting the computer

-Showing keyboard and emoji viewer in menu bar

-Restored defaults in keyboard shortcuts

-Reset PRAM.

-Done -killall pboard- through both Terminal and Activity monitor

-Also tried to reset the System Management Controller (SMC) on my Mac (Desktop)

-I cannot do a recovery since I have nothing backed up to recover

Any help will be appreciated

System: Mac high Sierra (10.13.6)

Graphics: Intel Iris Plus Graphics 640 1536 MB