Rust in the tank — logbook Toyota Corolla Levin 1993

the other day I bought a coarse mesh in the tank. I got a stray and ok, everything is rusty ... even the gas pump is corroded ... And in the tray in the middle there is a decent mountain of rust. I myself climbed there for the first time, probably the previous owner poured water there or drowned it ... Rust and the old one, you can see from it!
Today I took off the tank, took it off, fortunately on a lift, otherwise one would not have coped.

I couldn’t get on the lift in front, I had to scramble backwards