Looking for something that allows planning and operation design to use with mission making in video game

Hey everyone, So im looking into programs/software that allows planning for operations and also brainstorming operation and campaign/scenario storyline ideas to use within Arma 3 military simulation on PC, whether its a software and/or android APP im open to suggestions, I have mental health and learning challanges as well type one diabetes so Military career was never an option for me but hey at least I get to use my brain and skillset in a military simulation on PC through steam, BIG ACCOMPLISHMENTS!! Happening over here ( haha emjoi), any suggestions would be greatly appreciated, I hope everyone is doing well and enjoying their summer season so far.