I tried a few solution, the easiest solution for single hand and 100% sure that it wont fall is my back pocket, mind you I wear jeans at the game. It gives me enough space to keep one securely in each pocket.
One of the easiest approach for you may be want to try one of these for one handed approach:
https://doubletapsurplus.com/product...carrier-insert
https://www.aliexpress.com/item/TMC3...905703914.html
Reinserting into the pouches has always been difficult during fire fight specially as a one handed operation. I am experimenting with small size dump pouch which is somewhat promising.