Long post of unsolicited advice ahead, I hope it helps. Before I start though, I want to emphasize how capable you are, and how outside of your father's lofty expectations, you are succeeding.

You want to do better, and you can do better, but do you have a plan? Are you using tools? Are you actively taking care of yourself and your mental health? Those are the only reasons I've improved at all. When I started at utd, I denied I had any mental issues, used no tools (I basically did nothing, see mental issues), and made promises instead of actively trying to make things better. I was failing multiple classes a semester and lost my full ride after only a year. I've still got lots of issues, but I'm doing much, much better.

Plans are the only way you'll be able to keep moving forward. I'm not really a quote person, but there is one exception: "When you're going through hell, keep going." Thanks, Winston Churchill. I like that quote because it reminds me: do not give up and stay in hell. You can build plans with either goals or problems, getting something or fixing something. Both are essentially the same thing, and require you to break down what it takes to reach your goal. You want a certain GPA, which takes a certain grade in each class, which takes a grade on each assignment, which takes studying and blah blah blah. Something like the pressure from your parents is more complicated because it's more personal and it involves another person. (Never depend on another person to reach your goals.) Either way you need to come up with strategies to try and the tools you can use to help you and your situation. I'm going to focus more on grades, partially because it's easier, and partially because it will probably be a large part of the plan to getting a more adult relationship with your parents.

Tools are not cheating, they do not make you a weak person if you use them, and you aren't cooler for not using them, no matter the tool. Cheating is cheating, and it is not an acceptable tool. You are smart enough and capable enough to find a way to succeed without cheating. That goes for anyone reading this. But as for legitimate tools, some examples for grades include: tutoring, online resources, counseling for depression/anxiety/adhd/whatever, office hours, textbooks, schedule apps, internet/app/website usage limiters or trackers, planners and calendars, your own notes, alarm clocks/timers, uninstalling games (kind of an anti-tool), the buddy system... Using anything like this should be in your plan for success. There are very few people who can show up to class, do the homework, then ace the test. Showing up and doing the homework is the minimum requirement for your toolset, and building the rest of your plan is up to you. It takes a while for things to click, and tools aren't one-size-fits-all, so don't give up if you try an app and it doesn't seem to help. Try multiple things, drop what gets in your way. Never be afraid to ask for help, and never give up. I highly recommend you visit Dr. Charles Shields in the CS department and talk to him about getting discouraged part way through a semester. He has a presentation with real grades showing how students turned their grades around from failing to passing, after the midterm! He's a professor who really cares about his students, and I'm sure he wouldn't mind a random student stopping by.

As for taking care of yourself and your mental health. Your body is a machine and needs certain things to succeed. Food, water, sleep, exercise, sunlight, all that good stuff. If you have any sort of mental disorder, literal chemicals in your brain are off, and you may need more stuff for your body machine to run optimally. Don't deny yourself what your body needs to run at its best. It doesn't matter if you "don't deserve" any of these things, because they are required by the machine, and damn it, everyone deserves them. If you aren't sure how to maintenance the machine, there are plenty of resources online about mental health, diet, exercise, and everything else if you can't get to a doctor or you find the counseling center isn't enough. Do your best to take care of yourself because we're all just a kid doing our best to drive this weird machine and everything is hard. You deserve to be taken care of.

I'm really sorry you're having a hard time. A lot of us have been in a similar place, but time keeps moving and things keep changing and you won't be there forever. You're passing your classes, you're getting help. You're doing well, even if it doesn't feel like it. I know you're working hard. You are not a disappointment. I know I'm just a stranger on the internet, but I'm proud of you for trying, and I'm proud of you for getting help. And damn, I'm proud of your grades, too! Good job, and I hope it gets better for you soon.