what Mangas/Manwha/Manhua to own in physical form?

I have discovered the wonderful world of physical mangas. Yaay.

But, now I feel a bit stuck on what Mangas to actually purchase, you know? Too many volumes might be too big of a mouthful now, so help me find some completed-ish stories with fewer than 10 volumes, please?

And preferably in English because... That's a language I know.

Soo... What Mangas do you own physically? Do you have any you want to own eventually? And do you have some recommendations for me?

I bought Last Gender, My Androgynous Boyfriend, Given, Our Dreams at Dusk, and the light novels for Heaven's Official Blessing and Master of Demonic Cultivation. I am unsure if I actually have all the volumes now, but it is a good start.

Anyway, please advice