Which to-do list is right for me?

I can’t find a to-do list app that suits me.
After comparing various options such as Apple’s Reminders and Microsoft Lists, I am currently using Google keep.
However, there are often times when I want to do more, such as “I want to emphasize this character” or “I want to note down details in smaller font.”
Maybe writing notes in Word rather than an app suits me better after all.