@Julk44, you need to start brightening and/or adding auto-contrast to your cuts. STOP IGNORING WHAT WE TELL YOU. You've had two accounts banned already.

I do not know how to do it correctly!

Then ask for help!! Sticking your head in the sand and hoping a problem will go away of its own accord never works.

You can also use Google: this is what I've found with a 10 second search on how to auto-contrast images on Photoshop and how to add brightness on Photoshop.