Hi @neosenoko89,

Damaged LCD screens cannot be repaired, they have to be replaced.

Here's a video that shows how to replace the LCD display in the phone, that may help.

Replacements are available online. Just search for Samsung Galaxy A01 Core LCD screen to get results for suppliers that suit you best.

If doing this yourself is too daunting, contact a reputable, professional mobile phone repair service and ask for a quote to repair the phone.