iPhone SE - Bring it back to life

Hello to all, My daughter gave me this beautiful device after more than a year of falls including one in the toilet.

The screen is clearly disintegrated, however, as you can see from the photos it works very well.

I would like to bring it almost to new but I do not know which parts to replace.

I would be grateful if you could show me which substitutions to make:

Some info:

Photos

'''Link imgur https://imgur.com/a/0bbgMtc

Pro:

• The battery is fine.
• The home button works T
• The screen lights up well
• The phone works well without slowing down
• The camera works It loads normally.

Versus:

• The screen is smashed
• If you plug headphones it will burn one of them (this is crazy but I can bypass by using bluthooth headphones)
• The sleep button does not work (a local technician told me it's a card problem and that the replacement would not solve but I trust very little)
• The upper right corner is raised abnormally https://imgur.com/IS4WWwr
• Missing the insertion drawer of the sim (you can 'order from ifixit? As it is called in English or Italian?) https://imgur.com/N734LSS

To sum up: Which parts do you think should be replaced and could I do it alone with a little effort by buying parts and tools from iFixit?

Thank you very much for the answers I admire you very much.

Luca