It’s a tricky position. Uni is a structure for people. It’s fixed, certain, you do this and that then you qualify.
If you have a plan then it’s fine. If you feel that you are going to fall deeper into the lack of routine and structure then struggle to motivate yourself to achieve anything further in life then brute force your way through uni.
You mentioned gaming and honestly I’ll be worried because anecdotal but my friends brother quit uni, fell into depression and spent his year gaming, barely communicating.
I’m going to say you have to push yourself once you are out of uni, it’s all on you. Do you have that kind of drive and mindset to want to search for these opportunities and end up competing in these highly competitive positions? I think if anything I would opt for support at uni through counselling and extensions, get external help from study content and figure out where your time is going that you are not able to sleep, eat and only stressing.
Talk to your friends and ask how they are doing or managing, your peers are there too and honestly if you chose architecture then you are ambitious, you have potential, it doesn’t matter if it takes time or if you failed before. You can also take a period of interruption and come back later. There will be issues with funding through student finance but you can apply for CPR and some uni do gift year/ free of charge full repeats.