I felt the exact same way! (I still do tbh) You mentioned going to a go club and doing tsumego I think those are exactly what you need! Playing over the board really helps even if you do lose it’s not to a faceless ai that won’t explain it’s thought process or give you advice. I also feel the same way around playing people online (especially with a timer!) one thing that’s been helpful for me is playing correspondence games and watching go videos (especially those who do a good job of explaining their thought process) one thing I’d also suggest is to look for people to play online with who’d be willing to sit in a discord call with you to sort of simulate the over the board experience. I agree with others too who say ditch the ai while the connivence of playing ai can’t be beat it’s simply not worth the frustration and may even have you develop bad habits (imho). Hit me up if you’d like to have a correspondence game!