Top left corner is
http://www.mangago.me/read-manga/zantei_boyfriend/
This one is the top right corner one, and it should have 6 volumes but only chapter 0, which is a oneshot that has nothing to do with cover from the picture you sent, is scanlated
http://www.mangago.me/read-manga/boku_wa_subete_o_shitteiru/
This the last one. I think it’s not scanlated by anyone yet
https://www.mangaupdates.com/series.html?id=143483
Thank for all of it!
No problem!
http://www.mangago.me/read-manga/konomi_ja_naka_to/uu/e77b9f948dca07aa6ef53c9c4eccaf62_chapter-8/pg-2/
Asking for the other 3 manga names featured.