Everyone has stuff they cringe about themselves. If you don’t, you’re probably doing cringe-worthy things lol.
Like others said, you’re growing and this is maturity.
Plus, don’t feel bad about what you did when you felt suicidal. You clearly were not right in the head. I hope you are doing better now.
At least you can say that for yours. Some of the stuff that keeps me up at night is just me being a dumb kid lol…I remember posting on Facebook about “hacking” when I was talking about rooting my phone using tools that were publicly available. Ughhhhhhhhhhh that shit lives with me daily. One acquaintance called me out on it that real hackers don’t post their shit online and I just shrivel up and cringe inside whenever my mind randomly reminds me of that.
Take care. You’ll have more as you grow into adulthood, as we all do.