Does anyone on here use grow bags for potatoes? I’m seeing some on sale and thought about trying it out but unsure on size. I’m seeing four gallon bags then I found ten gallon. What would you recommend?

I am new to this group am 70 years old and learning how to grow vegetables and herbs and trying to eat more plant based because I am overweight and a diabetic. This is my first year growing my Garden in containers. It Didn’t do so well because I had them up next to my House and they were not Getting enough sun plus I wasn’t Fertilizing enough and didn’t realize the watering was washing the Nutrients out. I have corrected that and am getting fall produce now. I live in WA 8b or 9a zone. I am planting garlic by End of Oct and especially like growing more out of scrape of veggies. I am doubling the size Of my Garden next year because I bought everything When it was on sale In late Sept. i have been researching how to grow each veggie and got a soil test kit Then since I use a wheelchair I put my pots and grow bags up on pallets and my son will put in watering system in spring.