What’s the best way to fix this type of lacquered coffee table?

A lacquer finish is done by applying many coats of thinned down paint, lightly sanding between each and then finishing with a sealer. Yours is chipped down to the wood. I would use a gloss paint mixed to the same color to "fill" the chips being very careful not to spread the paint over the original lacquer. You can then use pumice powder to smooth.

Bear in mind this will never be as perfect as the original finish.

just cover it with a wallpaper sticker

can you add a wood moulding over the entire edges and refinish. this would stop it happening again,

It seems to me the only way you're going to be able to make it "match" is if you repaint the entire border. Which means you need to sand, prime and paint with a high gloss paint matched as close to the top as possible. Then seal it with a high gloss sealer. Let it dry, slightly sand a seal again. If you can'tmatch it up perfectly, why not try a co-ordina

ting color, like a pale grey or a silver? Your options are many.

You could tape off (evenly around the table) a section just at the corners using the largest damaged area as a guide. I would use a high gloss black lacquer since the legs appear to be black--or just paint that white border black with a high gloss lacquer paint