I keep my notes and to-do lists in my email because it's searchable and in a centralized place.
1. I have a meeting and I write down the notes in an email and send it to myself. I keep all my emails of things I need to do in my inbox. Anything complete I file into a folder within my email. This allows me to see at quick glance what is outstanding.
2. Then, I review the notes and clean them up (in case I want to send it to other people). I tend to have three sections (not all have to be filled out):
SECTION 1 - NEXT STEPS (Homework, things that need to be completed - think actionable)
SECTION 2 - DECISIONS MADE (Was there anything that everyone agreed on or commented on)
SECTION 3 - TOPICS DISCUSSED (This is the bulk of my notes but I summarize each topic discussed)
3. Once I complete the homework in my notes, I file it away in a folder within my email. If I ever need to reference it, I can just search my email.
There are other tools out there that can help centralize notes too, like Evernote!
It is good to do what you are doing -- explore different methods and choose one that works for you.
I started doing bullet journaling for all my day-to-day notes. The great thing is that the format of the bullet journal is up to you and you can customize it: https://www.thelazygeniuscollective.com/blog/how-to-bullet-journal
Another way that is useful, but requires more space (ideal if you are taking notes electronically), is using a mind map. Here are some examples: https://www.google.com/search?q=mind+map+examples&sxsrf=ALeKk02svodjgmI9_QhC7od7qgzL6PZJig%3A1616112009218&source=hp&ei=ielTYNGKCsnusQXDq63oAw&iflsig=AINFCbYAAAAAYFP3mYEImGVxDcQk6ql6gwFsU5XGdIBR&oq=mind+map+examples&gs_lcp=Cgdnd3Mtd2l6EAMyBQgAELEDMgIIADICCAAyAggAMgIIADICCAAyAggAMgIIADICCAAyAggAOgQIIxAnOggIABCxAxCDAToLCC4QsQMQxwEQowI6AgguOggILhCxAxCDAToFCC4QsQM6BQgAEMkDOgUIABCSAzoICC4QsQMQkwI6BwgAELEDEAo6BAgAEApQ1AlY_iZgqyhoAHAAeACAAXSIAe0IkgEEMTYuMZgBAKABAaoBB2d3cy13aXo&sclient=gws-wiz&ved=0ahUKEwiR8-SxhrvvAhVJd6wKHcNVCz0Q4dUDCAk&uact=5
* Bullet points
* Note Cards
* Hand written
* Typed out
* Reading from a physical book and highlighting or transferring the content to paper
* Reading from an eBook and then transferring to paper.
There are a variety of learning styles and online quizzes to help you understand yours. Once you have that locked in, you will be able to really fine tune your note taking strategy for success.
There's no one definitive style with regards to taking notes. I recommend experimenting with various styles until you find the one that suits you the best.