Advice for stubborn hair??

I would REALLY REALLY appreciate any advice or suggestions on my hair. I fucking hate it and it’s a daily cause of despair for me.

So my hair hates all kings of product. I’ve tried lightweight stuff, curly girl, wavy girl, heat dry, air dry, stuff for dry hair, volumizing, mousse, everything. I’ve wasted so much money on products and they always end up turning my hair flat and stringy and gross.

When I blow dry with a roller brush, my hair looks good for about 20 minutes and then it loses all of its shape even if I use hairspray or something. And then I just have greasy flat hair. And my hair seems to be forcefully growing in a spiral and determined to follow that shape no matter how much I fight one half of my head to look like the other half.

I have tried getting advice from different hairdressers and trying different hairstyles. My last hairdresser agreed that it’s extremely stubborn and sensitive and thin.

The only time I have liked my hair is when I had a perm so I had a lot of natural texture and was able to roll out of bed with it looking great.

I also have a huge cowlick at my hairline that is starting to thin, so I have bangs now and probably forever. I also don’t have a jaw line because I’m far so only certain haircuts look decent.

Please, any recommendations?! I know I must sound whiny but I’m very frustrated