Hello everyone I'm starting a dnd group for my disability group and I was wondering if anyone new of ways to make combat easier to understand example how to understand hit points and how to keep trying and how to understand what hits make what damage

is there a possibile app I could use?

Physical or mental disability?  Born with disability or were they received later in life?   You can probably use there own disabilities as a real world example.

In addition, this might be better answered in another section.