I am trying to figure out the best way for me to grow my bankroll.

I understand that kelly betting is the best way to go and want to apply it to my strategy.

Lets say that I play full kelly and adjust my bet sizes for every 10% increase/decrease in my bankroll. If I start at 100k, I would play full kelly until I hit 90k or 110k, then adjust my bet sizes, then that's my new current bankroll, and so on. Assuming that I am considered bankrupt when my current bankroll reaches half of the original bankroll, what would be the risk of ruin of doing this?

How would the risk of ruin be affected If I did the same thing with 2/3 kelly or half kelly? What about if I assumed bankruptcy at 40% or 30% of original bankroll?

Tried to state my question as simple as possible but it's hard

How do other professional gamblers and card counters determine how much to bet?

Please provide explanations.
Thank you!