My phone wifi disconnects repeatedly don't know the reason I have an iPhone which never disconnects though is there any solution

I got a s10 plus phone like 7 month old and now I'm facing a severe battery drain since a month as I'm in a lockdown state right now I'm very much disappointed for Samsung as this is my 4 th phone in a row since the s6 edge has been launched further ...

phone is hanging since 1 week I have s8 plus and more then 50 % of free space