idk

i don't think it's possible to search with tags like those. the most you can do is click on the three horizontal lines on the upper right of the page, and click on "All genres". there you can include and exclude which tags provided by mangago you want/don't wanna see and search. but "age gap", "older male younger female" aren't tags provided by mgg, so i don't think you can search with them. feel free to correct me.

I think you’re right the genres page doesn’t have those but the tags that are added by other users sometimes do! Sorry idk how to explain it but there’s a “top tags” section under each listing which is what I’ve been using

ooh, i see. i've been on this site for a while now and still don't know how to use it properly

sorry I was a bit confused by what u wanted but I tried to find something, hope you like them ^_^
https://www.mangago.me/read-manga/boku_to_koi_no_hanashi_wa_shinaika/

https://www.mangago.me/read-manga/ikeoji_monster_and_absolute_zero_boys/

https://www.mangago.me/read-manga/behind_the_scenes_scandal/

https://www.mangago.me/read-manga/cool_doji_danshi/ (not a bl, it's sorta like a bromance? definitely still worth reading!)

the ones I recommend were mostly comedy w pretty guys, if you want more wholesome ones I can try looking ლ(´ڡ`ლ)

Idk if this fits but..

https://www.mangago.me/read-manga/marchentic_bazooka/

thank you!!! I actually also love office romances and age gaps so ikeoji monster is perfect!!

it fits!! and the story is also unique hehe thank you sm!