I think these GLs fit what you're looking for:
https://www.mangago.me/read-manga/eventually_i_will_become_yours/ (both MC and FL seem to be on the aroace/demisexual spectrum)
https://www.mangago.me/read-manga/lilies_voice_wear_wind/ (demiromantic ace lesbian MC and aroace FL)
https://www.mangago.me/read-manga/tsukuritai_onna_to_tabetai_onna/ (demiromantic and ace MC and FL, ace and lesbian side character)
https://www.mangago.me/read-manga/crescent_moon_and_doughnuts/ (both MC and FL seem to be on the aroace/demisexual spectrum)
https://www.mangago.me/read-manga/watashi_sekai_o_kousei_suru_chiri_no_you_na_nani_ka/ (one girl from the couples featured is ace and lesbian)
https://www.mangago.me/read-manga/onna_tomodachi_to_kekkon_shitemita/ (demiromantic MC and FL)
https://www.mangago.me/read-manga/akumade_amai_watashi_no_kanojo/ (aroace side character)
https://www.mangago.me/read-manga/koisuru_meiga/ (chapter 10 only; aroace)
Yuri recommendations with aro/ace (some are nc):
https://www.mangago.me/read-manga/tsukuritai_onna_to_tabetai_onna/
https://www.mangago.me/read-manga/crescent_moon_and_doughnuts/
Lilies and Voices Born Upon the Wind (Renjouji Mei) - highly recommend
Soujitsu (Sal Jiang)
Tamago no Tsurezure (Itohara Aki)
https://www.mangago.me/read-manga/watashi_sekai_o_kousei_suru_chiri_no_you_na_nani_ka/ (not sure on this one)
It can be Yuri, shoujo aí, shoujo, yaoi, shounen ai
Whatever I just want to read someone who has a hard time getting into relationships (aroace spectrum) or canon or noncanon