Yeah, I had about an hour of manual driving before I got mine because back in highschool I wanted to drive manual so badly that I paid a "manual driving school" $50 to try.

Honestly the ZHP isn't too bad - I didn't really stall, but was definitely hesitant at downshifting/rev-matching at first. So much so that I'd bog the engine down in gears higher than what was ideal. I also feel you with starting off, I was definitely slower with engaging the clutch and took a bit of time to set off at lights.

It'll just take time, and at least for me it's never perfect - I still get a rev-match once in a while that is ever so slightly off and the car jerks just a little, but overall it's quite fun and I love rev-match downshifting instead of using the brakes.