Memory of I phone

It is one months that I’m fighting with the space of memory !!! I have already cancelled 13 giga of photos and 3 of wa but I am still at 63 on 64 !! Every time I cancel few Gigas in 2-3 days again I reach almost 64.

I noted I have 30 gigas occupied by “other” !!!

other I phones have only 5 or 6 !

any idea or solution ?