How can I customise LockStar in lock screen

Unitas indoor Koduvally, S23

I got blue line in my s23 display, it is out of warranty. I approach service centre, they changed display with free of cost but levied rs 649 as service charge.Because of manufacturing defect from samsung why I pay for the service charge?I want sams...

Recently my s23 got very thin blue line, contact service centre, they agreed to change display, I did not hand over it. Now I got UI8 updation. Is it more issue to my s23? Or is it got big blue line to my s23.What should I do