Ok this is important context we need to know.
Keep it simple man. Ask yourself: What is my goal? If your goal is to go to university, then pause all your projects and study for the damn exam lol. Literally just do the work and study. Once you pass the exam, you can resume your projects.
If your goal is to make money right now, then - unpopular opinion - you probably want to go get a job.
Here's something to remember - you are 18. You are young. Building a business and making money takes time. Good thing is you're starting early. You'd be surprised how much progress you can make in 3-4 years (approximately the same amount of time you'd spend in university).
If you're actually interested in university and want a degree, then make that your main focus, and then get a side job and pick one project to work on. If I was you, I'd go to university, and then get a side job at a restaurant or refereeing youth soccer games. Work 2-3 shifts a week. Enough to put a little money in your pocket. And then make a goal for once every 1-2 weeks to post a new YouTube video. The reason I say YouTube is because it probably takes the most delayed gratification out of any of your projects. You could spend a year on YouTube trying to get to 1k subs. Which would be a success! But since you are going to be in uni and working part time, you wont need the money from YouTube. So really your only challenge will be not quitting. Post regularly on YouTube for the next 3-4 years you are in uni and I promise you will have an audience that is big enough to make real money from. The only question is - will you do it?
Or do something completely different - you made this post - people are making efforts to help you - and you are just saying "I'm confused and stressed please tell me wut to do???"
Literally just pick 1-2 things to focus on and cut out the rest. Don't make shit so complicated. And don't waste all our time we took replying to your whiney post lmao
Do dope shit