stay off TikTok.
I read those kinds of stories before I had my surgery and they scared the crap out of me. I almost cancelled my surgery. However, those kinds of horror stories are extremely rare. Most of us never had complications or just had mild ones that could be "fixed" or treated. The most common complication is a stricture, which happens to about 5% of bypass patients, if that tells you anything (I personally would not consider something that only happens to 5% of people "common", but that's the most common complication...). It's a minor complication that's easily fixed.
P.S. I finally made myself quit reading the stories.