Advice? Not super sure how to title this one!

[u/iamagaylikeyou]

Bit of a strange one but I feel like I just need some opinions from people who may have a better understanding.
About 5ish years back my older sister (currently 33) came out to my parents as non-binary. This was right before a family holiday and I had encouraged her not to do so to keep the peace between the family. She did it anyway and made for a very tense holiday by being quite severe about my parents getting they/them pronouns correct. I knew this would be an issue since I had already had some slightly awkward conversations about my own friends who use they them pronouns, this was in part why I suggested she leave it until after the holiday, for a smoother grace period. We were all already used to walking on eggshells around my sister due to her having previous issues with her relationship with my parents and some mental health issues.
I from the beginning had questions about her being non-binary, due to already having questioned my gender, a lot of trans friends and not really seeing the signs in her. Not in a transmedicalist way, it just didn’t seem to fit in my mind. Fast forward a few years and she has cut contact with my parents, recently she reached out again and let slip in conversation to my mum that she’s not non-binary anymore(or something to that effect).
I’m ten years younger than her (23) and I’m pretty sure I’m trans masc, though I’m really worried that this whole experience has completely ruined my chances of having an easy coming-out to my parents. There’s a part of my that’s fully ok with just transitioning quietly, I don’t really care about pronouns and my name is neutral, and having my parents figure out when I’ve medically transitioned a bit and I can’t hide the physical changes.
But I have a really good relationship with my parents and I just kind of want to know it’s all gonna be ok.
(Very rambly but it’s a bit of a complicated story)
Ask any clarifying questions if it would help aha.

I also wouldn’t say that my parents are transphobic, probably uninformed, but definitely open to people outside the family who are trans, like my friends and my mums friend’s daughter.