I only have psychological GLs, if you're fine with those:
https://www.mangago.me/read-manga/sugar_girl_drip/
https://www.mangago.me/read-manga/getting_to_know_grace/
https://www.mangago.me/read-manga/ghosts_of_greywoods/
https://www.mangago.me/read-manga/opium/
https://www.mangago.me/read-manga/i_m_more_dangerous_than_you/
https://www.mangago.me/read-manga/manipulate_my_heart/
https://www.mangago.me/read-manga/fatal_possession/
https://www.mangago.me/read-manga/living_will/
https://www.mangago.me/read-manga/misterioso_1/
https://www.mangago.me/read-manga/strange_tales_of_kisaragi/
https://www.mangago.me/read-manga/tower_of_campanella/
https://www.mangago.me/read-manga/snowhite_s_doorbell/
https://www.mangago.me/read-manga/artificial_temperature_36_7_c/
https://www.mangago.me/read-manga/i_love_amy/
https://www.mangago.me/read-manga/let_s_kill_your_husband/
https://www.mangago.me/read-manga/killing_mr_park/
https://www.mangago.me/read-manga/gunjou/
https://www.mangago.me/read-manga/kitanai_kimi_ga_ichiban_kawaii/ (toxic relationship, features extreme fetishes such as age regression/babyplay, vomit kink, period blood kink, etc.)
https://www.mangago.me/read-manga/even_now_we_re_adults/ (cheating)
https://www.mangago.me/read-manga/yodaka_meguru/ (cheating)
https://www.mangago.me/read-manga/your_fetters/ (toxic relationship)
https://www.mangago.me/read-manga/zenbu_kowashite_jigoku_de_aishite/ (toxic relationship)
https://www.mangago.me/read-manga/my_girlfriend_s_not_here_today/ (cheating)
https://www.mangago.me/read-manga/serenade_keum_kyesoo/ (toxic relationship between the FL and side character)
https://www.mangago.me/read-manga/hone_no_nazuki_made_aisu/ (toxic relationship)
https://www.mangago.me/read-manga/ubai_ai/ (short story;toxic relationship)
https://www.mangago.me/read-manga/a_story_of_a_girl_who_killed_her_best_friend/ (one-shot)
https://www.mangago.me/read-manga/aliens/ (one-shot)
https://www.mangago.me/read-manga/141108/ (one-shot)
https://www.mangago.me/read-manga/you_are_my_angela/ (one-shot)
And I have a peak recommendation for you, it's more of an action manga but it does have some psychological aspects to it too, let me introduce you to the BEST new-gen DARK FANTASY, ACTION SHOUNEN MANGA of the 2020s, the peak of human literature, Kagurabachi! If you're looking for a story with a more slow-burning pacing and world-building, but masterfully-written plot, realistically written and interesting characters with great designs, GORGEOUS ART that evolves with each new chapter, MOVIE-LIKE fighting choreography, BEAUTIFUL panelling and composition and NO ROMANCE, ZERO FANSERVICE AND ABSOLUTELY NO SEXUALISATION, ESPECIALLY OF IT'S FEMALE CAST!! OH ALSO IMPORTANT MENTION; DON'T DROP THIS AT CHAPTER 58 (IYKYK), TRUST THE PROCESS OF HOKAZONO-SENSEI'S GENIUS!! GO READ IT NOW!!!
https://www.mangago.me/read-manga/kagurabachi/ (PEAK FICTION)
And these other shounen/seinen (mostly action) mangas are peak, too:
https://www.mangago.me/read-manga/gokurakugai/
https://www.mangago.me/read-manga/windbreaker/
https://www.mangago.me/read-manga/tokyo_aliens/
https://www.mangago.me/read-manga/gachiakuta/
https://www.mangago.me/read-manga/galaxias/
https://www.mangago.me/read-manga/ghost_fixers/
https://www.mangago.me/read-manga/centuria/
https://www.mangago.me/read-manga/psycho_eyes/
https://www.mangago.me/read-manga/witchriv/
https://www.mangago.me/read-manga/drama_queen/
https://www.mangago.me/read-manga/chainsaw_man/
https://www.mangago.me/read-manga/ultimate_exorcist_kiyoshi/
https://www.mangago.me/read-manga/madan_no_ichi/
https://www.mangago.me/read-manga/tongari_boushi_no_atelier/
https://www.mangago.me/read-manga/magical_girl_and_narco_wars/
https://www.mangago.me/read-manga/the_marshal_king/
https://www.mangago.me/read-manga/kai_hen_wizards/
https://www.mangago.me/read-manga/ruby_on_the_cake_hitogui_majo_no_bansankai/

i recently got back into reading i need some recs