Undo and Redo will help a lot
I strongly.reccomment multiple level persistent redos. Lost a load of typing just now because I thought redo would survive switching notes. Defeats the purpose of one note if you lose data by exiting a note, even if it is a redo stack.
Moiz Rafay commented
Yes please. Sometimes I draw something and can't erase it so i have to wait till i get back to the full app.