307 SW tailgate shock absorber

Guys, I have to use a lot of force to lift my tailgate while it is opening. I think shock absorbers can no longer complete their duties. Does it have adjustment or do I need to install a new shock absorber?

it is time to change the original (pieces) 85 tl supplier industry 20tl

The original is always better, but the difference is huge and not a part of the vehicle's engine-chassis. If repairs are not possible, I suppose I will buy the sub-industry.