Not all ICUs are like that, especially not every night. I will point out that undoubtedly some of this is harder because you are new and things do get easier with practice. Your skills (like blood draws), but also your intuition and knowledge of the building/medical practices do get better with time. But when you have 3 to 4 patients per shift you have no time for "practice" and you are basically praying that everything goes right the first time, which isn't reasonable. Patients are hard sticks, feeding tubes come out right before med passes, patients go into A-fib, etc. It also sounds like everyone is so busy that no one can even try to help each other...can you propose being someone's buddy so you commit to helping each other turn and bathe rather than looking for help each time?
At 6 months in you are probably *barely* getting to the point where you can kind of look at a patient situation and know what's coming. (So your patient has new abdominal distention, emesis of tube feed, no stool x3 days, fever, white count, increased RR, etc...drain their belly and you're probably going to CT so you should look for a stretcher now rather than scrambling.) But to me it seems unreasonable to make a nurse with 6 total months of experience respond to RRTs.
I don't blame you for looking elsewhere but I (personally) would be hesitant to get stuck in another 2-year contract. I'm actually still working at the hospital that hired me as a new grad but I wouldn't have been able to promise that when I was hired. Can your current hospital move you to another unit without breaking your contract? They should be invested in you...at least a little bit...and try to keep you if they can. (On the other hand, they won't and can't care more about your welfare than you do, so you have to be your own advocate in this regard.) Or, even though you don't want to pay back the $10K, *can* you pay it back? I hate to sound blase but $10K is not much compared to your mental health.
Good luck with your decision. I don't think this means you aren't cut out to be a nurse...but getting out of this situation before it completely saps your *desire* to be a nurse might be a choice you have to make.