I am a year 11 and 12 teacher in Victoria. School and exams do suck. All that homework should be illegal. It's all way too much and it is NOT ok. We hear you and we feel you. Every single day.
Youre going to find something that you enjoy and you're going to find fun and support and love around you. It's just not here yet. Keep up your sport and remember that feeling well is the most important thing before school. School is important but it isn't more important than you.
I wish I could change the way school is. One day I will build something like that into my teaching but alas, I am new and find it very hard to get through, and I am the one writing, not sitting the exams!
Hang in there, mate. This too shall pass. I hope you feel relief soon and learn to let the bad times go so you can find something to laugh about and relax a bit. Life is too short for all this stress!
Sending you non-weird, professional love and virtual cuddles. I am so with you.