Maybe some of these?
https://www.mangago.me/read-manga/sugar_dog_life/
https://www.mangago.me/read-manga/eyes_speak_more_love_than_the_mouth/
https://www.mangago.me/read-manga/free_kisses/
https://www.mangago.me/read-manga/kiyona_yubisaki_bukiyona_tsumasaki/
https://www.mangago.me/read-manga/smoky_nectar/
https://www.mangago.me/read-manga/kabukichou_bad_trip/
https://www.mangago.me/read-manga/takara_no_biidoro/
https://www.mangago.me/read-manga/terano_kun_to_kumazaki_kun/
https://www.mangago.me/read-manga/makitakun_no_koiji_wo_jamasuru_to_shinu/
Basically one of them has to be simple-minded/dense/naive but in a cute way and not a indecisive/annoying/incompetent way.
For eg, i really enjoyed the ukes in these two;
https://www.mangago.me/read-manga/sokuochi_yarichin_yankee/
https://www.mangago.me/read-manga/majo_to_neko/
Bonus if the couple is manly