Searching for guidance as a Muslim

Assalamu alaykum. My family wasn't very religious-my mom doesn't wear hijab, they'd drink (they kept it hidden until I was older), and they didn't pray. Growing up in a community with few Muslims, I only realized at 12, during a school project on culture, that I knew almost nothing about Islam. When I asked my parents why they never taught me, they said it was up to me to choose whether to believe and practice, and they didn’t want to force it on me. So I started learning completely from scratch. And yeah, even though I speak some Arabic, I don’t know Classical Arabic at all. I struggle a lot with modesty-I don’t wear hijab and often wear tight clothes, but I’ve always avoided showing my legs or shoulders because my parents had some limits. Because of that, it’s often tough to pray since I’m usually dressed in a way that isn’t modest enough. I’m looking for advice on how to grow as a Muslim and get into praying regularly. Unfortunately, I can’t pray during school hours because it would lead to serious trouble for me. Any tips?