You can get decent payment. It's not dangerous either, Russians are basically Nigerians fighting with shovels and Ukraine has lost around 30k soldiers so far while Russian casualties number in the millions. I'd say go for it.
>Are Ukrainian soldiers ok with female soldiers?
Absolutely. They have a lot of female drone operators and even frontline personnel. You'll probably serve with other foreign mercenaries like Colombians but they're from a pretty cool anti-commie militia.
You can sign up here:
https://www.ildu.com.ua/