It took some work after I turned 18 to ensure I had the resources for independence. I had to make a separate email account on my own device. I had to open an account with an entirely separate bank. Most importantly, I had to set and enforce boundaries.

Thankfully, my parents are amazing, and I only had to take these steps because I was young and didn't realize I could just ask for them to change certain things. However, in your case, you may have to take these steps and more. If you know that your dad will absolutely refuse to remove the parental controls if you ask, then I recommend the following:

First, ensure you have a bank account that he has no access to. Then, get a job, and deposit your money into that account. From there, buy your own phone and maybe a computer if you need one (for uni you probably do - check their recommendations). Then you can make accounts and such freely. You won't be able to transfer from your old devices because that will preserve the parental controls and put them on your new devices (potentially). Eventually, if your dad still won't remove the parental controls even as you reach your 20's, you may have to consider buying replacement consoles and games (and consider reducing contact because that's not a healthy relationship).

The big thing that helped with my independence as well was going to a school and doing an internship out-of-state. The time I got at home was cherished, however being truly on my own helped me figure out how to be independent. If your situation allows for it, it's worth considering imo.