I’ve been using EDrawMax to make some of the images I need for my thesis paper. EDrawMax is expensive!!!
Here is a NIFTY alternative. There is a free version, and then different versions with increased functionalities for different monthly rates. It’s called Lucid Chart and it is a Google App.
There is also an educational version of Lucid Chart. I am not sure of the difference, but I believe that if you sign up with a legitimate school email, then perhaps you get more of the functionalities for free. Teachers use this app to assign flowchart and diagram and mind map -making to their students. NOTE: You cannot use both the generic and the educational version with the one, same gmail account. Just FYI.
Here is the url to the generic one:
Blessings, all, and vibes for your current endeavors.