I use onenote at work for all my notes. tabs and individual pages let me organize things so nothing is too long to scroll and find what I need. I can put text, screenshot, and hyperlink (to another part of one note or outside link), and a link to a pdf or excel file. I can add check boxes to whichever line items.
once I’ve got a nice set of notes, I can share either the entire notebook, the section, or just that page with the next person. or if they’re a bit of a luddite, I can print it out and maintain format (mostly). the most recent version broke emailing a page, but if you’re still running an older version of one note, it embeds it, with formatting, without being a pdf.
got something you need to paste in all the time? I’ve got one page where each text box is one copy/paste comment. clicking the header automatically selects all the text in just that box.
like OP, I tend to use one note at home for D&D, but if I can find something just as good I’m happy to try it. work leaves me with MS Office.
paper calendars work ok. apps are better at collating and predicting based on past data, and therefore giving you a better idea when and what to expect and whether it’s “normal”.
apps can help you provide a condensed report, which helps when seeking help from a doctor. it shouldn’t work that way, but at least in my anecdotal experience, the Dr who dismisses handwritten notes for 3 months, was more reasonable when it was “data collected via app”.
I stopped using an app a few years ago, because of privacy issues, but there are absolutely good reasons people still use them when a calendar works.