For some classes I just have a word document for that class that I open and free write, insert tables, lists, bullet points, etc. and for others I handwrite on a print-out of slides. Usually works for me. Am I doing it wrong?
Do what works for you. I'm old school too and still print out the slides and re-write my notes on them afterwards. Although many students use notability, apple pencil, etc, I just stick to what I have been doing for years.