I want to grow in my din but having a lack of understanding

I'm american born muslim since i was a young boy. I find it hard to keep up with my din or feel like i'm not dong it right. I don't read arabic, i have trouble understanding or even keeping up with all the rules and sunnah. I feel like i'm a hypocrite because of my lack of understanding. To me i have no doubt about my belief but i feel like my prayers are not being done correctly. I read and try to educate myself on my din and find a alot of things that im either doing wrong or not enough of. Is this a sign that ALLAH has sealed my heart from Islam?