what happened to my electrical system

Something like this happened to my Chrysler Pacifica and I'm still not 100 percent sure which fix actually fixed it lol. But in my Pacifica like u I replaced the battery and it was fine for a couple weeks. Thought it was a bad battery cause their we're traces of battery acid leaking, changed out the original battery when it went the first time and it was emaculatly clean no acid or corrosion anywhere so obviously had em replace it again. Ran good for almost a month. And again I'm stranded and stuck somewhere like wtf ya know. So next YouTube directs me to check for old worn crack or busted ground wires that might need replaced and if not to just add an extra ground wire from the tranny or engine block. Ok done good to go yea for another month, so by now I'm thinking it's gotta be either the starter or the ignition switch right. Well more research and YouTube how too on my Pacifica lead me to not so much the whole ignition switch but the ignition switch actuator pin a tinny little plastic piece inside where u turn your key to start it that worked for a bit also but still wasn't right. Still had to jump it off the block every couple days, went out and bought heavy duty jumper cables since this was happening slot still. I've had to jump it like 2 more times and I haven't had any starter electrical problems since lol, so doing any of these might help you. But it was adding the extra ground wire that stopped the electrical problems like the no radio no headlights no heater no windshield crap it was doing after I changed out that 1st battery. Cheaper than a starter replacement so I'd go with that one lol.