Unfortunately your display is damaged beyond repair and the only way to fix it is to replace the display. Amazon sells decent quality screens for a good price if you want to repair it yourself its not too difficult just remember to get the correct color screen and disconnect the battery first and you will need a custom pentalobe screw driver to remove the old screen so make sure you have the right tools.
[link|https://a.co/d/7GpNAp2|MacBook Pro A1989 A2159 A2289 A2251 2018 2019 2020 Year 13.3" Retina LCD Display Assembly EMC 3214 3358 3301 3456 3348 2560x1600|new_window=true]
[guide|139752|MacBook Pro 13" Touch Bar 2019 Screen Replacement|new_window=true]