Well, it seems no matter what anybody recommends or suggests, when you try it, it doesn't work.
The issues you're having have been mentioned by other people and the recommendations you're being given have worked for other people.
Either you have a uniquely difficult system or the problem is that you're unable to properly implement the recommendations.

So I think its time for you to stop trying to achieve a result yourself and put yourself in the hands of a salon.

I think there are some people who just can't cope with it and it sounds very much like you're one of them.
So if you want to get the results you want, you're going to have to find someone to help you.

Also, if you're getting your hair wet every day when you shower, this will be why the front keeps lifting off your scalp.
Plus, its vital not to get the scalp wet for 24 hours after you've attached.

Re getting the hair to go in the direction you want at the front:
This is how I do it using a comb on damp hair & a hairdryer.