I commend you for your maturity and astuteness in considering all this and making these determinations.
Similar to DaasYochid’s point, I would say that if your parents, like so many others, have been misled by the mistaken ideology of MO, and it does seem that way from your post, then it also seems understandable that they would give you the type of education that they did, rather than a traditionally Orthodox chinuch because, unfortunately, MO was, presumably, the best conclusion in their minds.
The good news is that a good secular education (like being taught how to properly write and speak in English) can still be very helpful even within kodesh professions, so it’s great that you’ve gotten that education. Lihavdil, any good non-MO Yeshiva high school can do wonders for your religious education as well regardless of the MO issues you’ve had to deal with until this point.
Hatzlacha rabba.