I love straight hair, so the fact that mine is naturally wavy pisses me off to no end. Got so autistic with how much I used to straighten it that parts actually broke off. A couple years ago I started getting keratin treatment and it makes such a difference. I still use the straightener for special occasions, but for the most part I just dry it well (try to take it easy on the heat though) and get keratin every few months.
Also yes, fuck frizz and humidity.
Instead of a straightener, have you tried using a copper roundbrush with your hairdryer? Most people with curly/wavy hair dont blowdry but if you use a copper roundbrush while you do it, it straightens your hair really nicely. Then you can go in and touch up with your straightener and you dont have to worry as much about heat damage.
Also, i have extremely curly hair and i hate maintenance, so i use mixed chicks shampoo, no conditioner in the shower, towel dry 70% of the way and then detangler and leave in conditioner (still mc), finish airdrying.
If I need to refresh my hair between showering (which is like never because im a swimmer) i mix 1tsp of detangler with a cup of water in a spray bottle and dampen my hair, then comb out with a widetooth comb. If you add a tiny bit of clear hair gel to that mixture, it adds a little hold and glossiness but i only do that for special occasions, like if my hair is going to be braided or something.
I cant stand the feeling of products in my hair though. I will say, i grew up with a mom who didnt know how to take care of my hair, but this way my hair is extremely healthy and hardly ever frizzy, even in humidity.
Also fuck ever hair stylist and salon, i am the only person who will ever cut my hair. I would rather give myself a buzz cut (which i have before) than let one mother fucking cosmetologist retard touch me.