Can someone recommend me "only looks at him and nothing but him" type of manwha/manga/manh...

https://www.mangago.zone/read-manga/sketch_1/

It is good?

I read this halfway and it was, seme fits the description of having eyes only for uke

Try Mr. Dior

my forte
https://www.mangago.zone/people/tag/1284539/seme+only+sees+uke/
https://www.mangago.zone/people/tag/1284539/uke+only+sees+seme/