the thing is there is an easy solution

try playing the popular male character you like yourself and advertise as m/f only and you'll have all the shippy tags you want since clearly there are a bunch of female character players looking for m/f with that guy

if you are super thirsty for a specific ship you need to be willing to play both sides of it

half of the time i've wanted to play a specific ship i've had to switch characters to get it for both m/m and m/f

you can't expect other people to change what they're doing to suit you so you have to work with what is available