Constantly Failing

No matter how hard I study I'm constantly failing.
I don't get good grades but I'm understanding concepts.
I am surrounded by people who don't have to study in order to get good grades which brings my confidence down even further.
This year I sacrificed a lot of my time to study and avoided hanging out with friends.
I told my boyfriend I didn't want to see him often because I didn't want to chance getting distracted from my work.
I muted all my group conversations so that I wouldn't receive notifications about messages constantly.
I missed group hangouts and skating sessions because I had to stay in to study.
I posted less on youtube and instagram.
I turned off facebook unless I was asking questions in the facebook group about the content.
I went to TA office hours and professor office hours.
I went to "How to study" sessions my residence held.
I turned off my phone and hid it from myself.
I wore earplugs and studied in complete silence.
I wrote out all my notes because I know that the computer is distracting when studying.
I read all required readings before and after class, then I would pay close attention during class and have tunnel vision when it came to lectures.
I highlighted important things in my textbook and decided to make a separate notebook with those important things.
Despite all my best efforts to study... I failed.
When I have friends who complain about them getting 70s I just stay quiet because I know if they were to find out that I struggle to maintain 50s they would look at me differently.
I feel stupid around my friends who talk all the time about how hard their program is, but then they don't need to study to stay in it.
I see my friends all passing their courses with "satisfactory" grades according to them.
I am constantly told my program is the easiest because it doesn't require math or science and that it should be easiest to get 80s in, yet somehow I'm failing at that.
It's just so frustrating since I'm working like crazy and following all the advice on how to study successfully and it's just not working.
I had an early acceptance into my University because my high school didn't pride itself on grades so maintaining and 80 average there was incredibly easy.
Then I graduate high school and go to University and find I'm behind on absolutely everything because I never had to take AP courses and my level of high school academics was on a scale much lower than my peers'.
I don't know what to do.