I absolutely know about the importance of potassium.
In December 2020 strange things were happening to me. I was too weak to get out of bed one morning, I suffered chills - couldn't get enough blankets. I was confused and my head didn't feel right at all.
I got up to go take a pee, fell down, couldn't get up, was delirious. Incoherent.
Wife, all 120 pounds of her couldn't pick me up so she dialed 911.
Long story short - I almost died from hypokalemia, which is severe deficiency of potassium.
Three days in the hospital, IV bags in both arms, lots of tests, doses of potassium large enough that they had to draw blood hourly to make sure they didn't give me too much.
I do not take prescription potassium, but an OTC supplement, PLUS eat foods rich in the mineral. Bananas, potatoes, tomatoes. Bananas and cherry tomatoes each and every day.
It's nothing to fool with.