Scart is the European term for that 21 pin connector on your DVD player. It was the standard for A/V input on most European CRT televisions. It will give you a 576i output and your TV will scale it to its native resolution. It's not going to look great, but DVD doesn't on HD sets (let alone 4K). Newer DVD players (or blu-ray/DVD players) have HDMI outputs, but yours must be pretty old.
Anyway, your TV does have YPbPr "component" inputs. This was effectively the equivalent to RGB Scart in other territories, so an RGB Scart to component cable/adapter is what you ideally want. Component is not to be confused with composite video, which is what the adapter above will give you. This does what it says on the tin, a "composite" of the Red Green and Blue that is then processed by the TV and will make a poor picture even worse (assuming your TV even has a composite input. There isn't one pictured.)
An RGB Scart to component cable might be hard to find so a Scart to HDMI adapter might be more likely, but I can't vouch for the quality of those. Just make sure it mentions RGB. I imagine that one of these will need to be powered as it’s essentially an A/D converter.