2010' Hyundai i10

Good morning,
I have a car for sale that has been used regularly for 13 years. The first 7 years was a car used by my Dad, and then by me.
The car has a gas installation replaced in 2021 and the gas tank is perfectly fine.
As far as I know, the connection between the tank and the installation is not completely tight.
The car had a cullet in 2021 on Christmas Eve, the front bumper was damaged as you can see in the picture. Also the rear washer does not work.
I tried to collect all documents after repairs from mechanics, so I will be happy to show you.
Feel free to contact me, I will be happy to provide additional photos and information.