This is a thing that is avoided heavily in Russian because of general animosity towards LGBTQ topics in Russia. It can even be prosecuted as the Russian Supreme Court deemed the LGBT movement as an extremist group in 2023.
There isn’t a concept of a singular “they” in Russian. Using “они” for yourself would sound very strange because it changes verb and adjective endings as well unlike in English.
“Оно” is only used for inanimate objects.
You can kind of get away with not using gendered pronouns/endings by using passive voice like: “Мне думалось” instead of “я думал/а”
It will be easier on you and on whoever you’re speaking with in Russian to just choose between он/она (which ever you most closely present as) since so much of the language is grammatically gendered unlike English.