Regulating cycles without BC

Hello everyone. (20F) My cycles are “regularly” really long (40 ish days). I menstruate around 9 times per year and I know that’s not ideal.

Also it’s really exhausting to be freaked out thinking I’m pregnant every cycle since it takes so long for my period to come.

I tried birth control and it was horrible. My gyno recommended me another brand but I honestly cannot afford to risk another month of feeling like a turd and having horrific skin. It deeply impacted my productivity.

Anybody with successful stories of regulating long cycles without birth control? Thanks :)