Solidarity, OP! Is wild hair genetic in your family? Mine is. No matter what you do to it, as soon as you set foot outside the door, it reverts back to its wild self, as if screaming that it can't be tamed! If it sees wind, rain, sweat, humidity, static, etc. it tends to go, "Ta-da! Look! I look like a 1980's newsreader/a windswept Shetland pony/Cousin It/a combination of Brian May and Hagrid!" Its natural state, and lack of finesse, tends to alarm hairdressers. My favourite one declared, "It's very fine, but there is a LOT of it, and all this blow-drying is really hurting my arms!" 😁
I have tried dye (it dried it out further), all kinds of shampoos and conditioners (including ones at eye-watering prices, even on sale), not exposing it to heat from hairdryers or straighteners for years, various supplements that are supposed to do wonders for your hair and so far, nothing works. I have regularly considered shaving it all off, but I am not brave enough to do that. In any case, it would probably still grow back the same.
Some of the women in my family have gone for shorter hair. Only one still finds that hers sticks out at odd angles and still needs taming, but said that it's easier than when it was long. I am lucky in that I can contain mine under a hat for the next few months, as I work outdoors. It's usually up in a bun (no straggly pony tails on show here!) and, as I don't have to look at myself all day, it is not my problem. I've had people make rude comments about my hair, so I've asked them if they want to deal with it every day, and when they say no, I remind them that I don't want to deal with it either.