TIFU and got fired from my job

I (18F) has been working at my part time job at a government run amusement park for the past year. I believe I've been a great worker, I'm responsible and serious and have rarely had any negative talks with my supervisor. I believe I've always put in my best work and I've been a good asset to the team. My job hosts very regular training sessions, since we do different things in the amusement park for every season (e.g. fall we become a haunted park and winter we are a skating rink).

I've noticed this from the start, the job would never indicate if the training was online or in person. The first few trainings we got emails telling us if it was in person or online, but afterwards I've just been reaching out to my supervisor asking if the training would be online or in person. From this, I've caught the pattern that 2-3 hour trainings are always hosted online and I've only had in person trainings that are a minimum above 5 hours since it's a hassle to open the park and get all our safety inspectors and supervisors in for a 2 hour training session.

Winter season rolls around and training starts again. Since I've worked there for a year, I didn't think it was necessary to email my supervisor and confirm (fucked up) and proceeded to fuck up more by not setting an alarm for training. I always have emails with sound notification on so I assumed once they send me an email, I can just join it and hence don't need an alarm.

Well, I got distracted with a ton of homework and didn't think too much about the training, I just waited for my email and eventually forgot about it. That email never came, since the training was... in person. The next day I woke up to all my shifts cancelled and an email from my boss that says I was fired. I was very caught off guard because I went from having a stable job to losing it in one night, I regret it so much..

It sucks because I know there's another training time they could have scheduled me for. We always host 2 of every trainings due to time conflicts for some and allow our employees to choose the date we prefer. I'm sad to be fired so suddenly after putting in a year of hard work, I've never made mistakes at my job and making such a big mistake is really killing me. To make things worse it's Christmas and I was counting on my income this month to buy gifts for family.. sigh.

TLDR: TIFU by missing a 2 hour training from my job which I thought was online because of past experience, completely wrong, got fired within the day and now is shocked and in regret for not confirming beforehand.