Closet Exploded (How to come out to parents)

Long story short, social media account about HRT got pushed to parent by algorithm and now I (19) am out. Unexpectedly.

I am an international college student and parents are overseas back home so Im physically safe, but I'm financially dependent and due to visas issues I cannot work. I knew they were pretty transphobic so the original plan is to just never tell them. Their reaction was basically "hormones are bad for you/you're just confused/what if you regretted this"

Im like a trans guy but in a femboy way and also bisexual/gay and present myself pretty femininely and also realized im trans relative late(?) in life (~15yo), which none will be helpful in explaining transgenderism to them because most article i can find is for binary trans people also people who knew they were trans since a kid.

So basically here to ask for help-How to explain transgenderism and non-binaryness and the difference in sexuality and gender identity and expression to mid 50s Asian relatively conservative & religious parents who barely know that gay people exists not to say trans people?

(any advice on next steps if i get disowned will be appreciated too)