You get what you pay for. Over the counter (OTC) hearing aids have their place, but in my opinion, they do not offer the same level of performance as prescription, custom fit hearing aids purchased from an audiologist.
I struggled with OTC aids for years. Finally my Aetna Medicare Advantage covered programmable aids. I got a pair and the difference was radical. Simple amplifiers just do not work for true hearing loss.
Mine “PHONAK” are also rechargeable so I simply put them in the recharger when I go to bed and they are always fine.