Glad you're here. A lot of people are definitely willing to talk to you now that you've reached out. I, for one, can relate a lot right now and have some advice that might help.
I'll list things too (because we all know it's much easier to get our thoughts down this way)
1. Not being able to do anything properly anymore, or not being able to focus on anything, has been me for the past month or so. (Not going to lie, replying to this right now is me procrastinating on an assignment, hah). Sometimes I would just stare at my screen for an hour before my timer goes off and I realised I only wrote a sentence. It's like, you don't feel bothered, or can't feel bothered, to do anything? I have yet to overcome this, but a good thing to do is set yourself goals and alarms, or put on some music to help you focus.
2. For the crying, it could be hormones, anxiety or just being emotionally spent. You've exhausted your emotions to the point where anything makes you cry, or you're too emotionally tired to be bothered with anything and/or focus. This goes hand in hand with the sleep. I think all of these problems are linked; not focusing on work means less sleep which means emotionally/mentally spent.
3. This is probably relevant to everything that's going on. As with me, whenever I become extremely lonely I find some fandom to fall into/some celebrity to fall for. I guess for you, you need these aesthetic things to provide an emotional response? I'm no expert but these sudden attachments or obsessions for me are usually always a result of a depressive period.
4. You sound like you need a break from all this stress, but I know how hard breaks are to come by when there's always something due around the corner.
5. With your relationship with your parents, that's hard. I wish there was an easy way to solve this, but I'm yet to find one. I'm not going to be one of those people who say "I'm sure that they love you", because that does nothing to help, and I know how hard communicating can be.
6. Exercise and sports are good. They definitely make a difference in emotional, mental and physical wellness. Keep up your sports because they can be a refreshing break from your studies and issues.
Hang in there, and do those little things that make you happy until you can have a break from all this. I'm sorry I couldn't help more, but I'm going through the same, so we can both try and find ways to break this cycle that leaves you feeling horrible.
We love aesthetics.