I did over twenty years in the Navy - including war service. Then I retired and became a teacher.
I almost quit half a dozen times in my first year in the classroom. Only stubborn refusal to be beaten by a bunch of kids stopped me.
Now I love teaching - but I’m also in a school environment where the majority of the kids want to learn and we’ve got the resources and methods in place to deal with things when they get difficult.
One of the things that I think trips up new teachers is that they are expected to be responsible for the bad behaviour of their students without being given the methods or support needed to achieve good results. Experienced teachers manage to get themselves into situations like mine - where teaching is relatively easy. New teachers get the toughest kids.
When you’re a 21 or 22 year old straight out of college (and the fact that you went to college and graduated is an indication of a certain degree of diligence and being willing to work in school), and you find yourself teaching 16, 17, or 18 year olds - people who are only a few years younger than yourself who don’t want to be there, and who know they can get away with doing almost anything to you short of physically attacking you (and often they can get away with that as well) and if you dare to even raise your voice, you could wind up being fired... it’s a ridiculous situation that’s become accepted in our schools.
Congratulations on maintaining some fortitude in the face of adversity. You probably have some lessons to teach that aren’t in the books. I hope soon to be discussing local potential to form a classical education charter school in my area over the coming years as an alternative to the mediocre results often experienced when “experts” foist non-essential elements into the curriculum. A public school teacher today certainly has much work to do with little in the way of moral support. I’d be curious to know the grade and subject(s) you are teaching.