The further you get into the game, the less of a problem it will be. That's it. That's all we can tell you.

People have explained, and offered advice, and told you the methods you can use to get the experience you want.

The "normal" game experience at level 50 only will not give it to you.

We cannot fix this for you (besides repeating the suggestions already given).

You can follow those suggestions, or move on into Heavensward where the new bosses are still challenging, and realise it stops being a problem after this point.

Also, I'm sorry, but your English is not clear enough to understand the other problems you are trying to describe.

If you have no interest in (or appreciation of) the advice people are trying to give you, then I don't see a reason for me to continue discussing it