I have looked into the Kelly Criterion in the past. The thing I get stuck on is that it's quite impossible to make exact estimations. The huge value spots are rare these days and making profit has become more about grinding it out. I also place 100+ bets each week which makes kelly complicated. I am used to flatbetting which has worked for me over the years. I tend to avoid lower 1.8- odds who usually have lower value and higher 3.0+ odds who bring along much higher variance. My records show better ROI on 2.3+ odds, so betting those also flat can in a way be compared to kelly.

It is interesting though and I do realise I put my current comfort situation above trying to maximise my returns. The risk vs reward and quality vs quantity questions are one of the more difficult in betting imo.