Sucks but it's a risk you take. My tips to you would be to utilize the break handler. Perhaps invest in an AIO fighter and bot somewhere a little quieter - this is sure to have a lower ban rate than Rock Crabs (which is one of the highest ban rates for combat)
It moves all suspected bots into worlds 385/386. They can then be more closely examined by Jagex staff to decide whether to ban them or not. Hope that helps.
It's a game, play it until you don't enjoy it no longer. You can say you wasted the past year, but undoubtedly you enjoyed it or you would've quit sooner.
Everybody would love to ace all their exams, but not everybody does. Exams are only a tiny part of life. Think of the big picture and everything you could do in life without exams.