need manga recs :'3

I haven't read Phantom Busters myself yet, but if you liked that maybe you'd like these too:
https://www.mangago.me/read-manga/ultimate_exorcist_kiyoshi/
https://www.mangago.me/read-manga/utsuranain_desu/
https://www.mangago.me/read-manga/tokyo_aliens/
https://www.mangago.me/read-manga/ao_no_exorcist/
https://www.mangago.me/read-manga/noragami/
https://www.mangago.me/read-manga/tougen_anki/
https://www.mangago.me/read-manga/sket_dance/
https://www.mangago.me/read-manga/code_breaker/
https://www.mangago.me/read-manga/furyou_taimashi_reina/
https://www.mangago.me/read-manga/make_the_exorcist_fall_in_love/

These are sorta similar to Gokurakugai:
https://www.mangago.me/read-manga/jujutsu_kaisen/
https://www.mangago.me/read-manga/gachiakuta/
https://www.mangago.me/read-manga/chainsaw_man/
https://www.mangago.me/read-manga/d_gray_man/
https://www.mangago.me/read-manga/saiyuki/
https://www.mangago.me/read-manga/ayashimon/
https://www.mangago.me/read-manga/kemono_jihen/
https://www.mangago.me/read-manga/kaedegami/
https://www.mangago.me/read-manga/tsui_no_taimashi_ender_geister/
https://www.mangago.me/read-manga/night_light_hounds/

This one isn't all that similar to either manga you enjoyed, but have you read 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)

Also these other shounen/seinen (mostly action, NO ROMANCE) mangas aren't really similar to Phantom Busters or Gokurakugai, but trust me they are great, too:
https://www.mangago.me/read-manga/windbreaker/
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/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/