Put in the effort and do your best to get a top degree and graduate with flying colours.
I'm on a gap year after A-Levels right now, I honestly don't feel so disheartened by everyone going to University (primarily because 90% of them hate it lol). Fundamentally, they're getting a full-time job before you but you're going to be working your whole life anyway.. If anything you should enjoy your last year, put in work and also have as much fun as you can. This is your last ever year in the education system so go out with a bang. There's nothing to be envious about because you're all ultimately working towards the same goal. Have the best year ever and make it memorable. I'm sure there's people resitting A-Levels and behind a year, or having started Uni late on a gap year or even doing a postgraduate degree and they're in the same position as you but at the end of the day you're going to get the same qualification (a degree) and go into employment, no problem with finishing later than others at all.
You've worked so hard to get to third year. Do not give up now.
Work hard, have fun and stay motivated. Xox.