It's bad if it becomes an addiction and you feel like constantly watch/read it. But if you're that age I don't think it's off to want to see content in that settings
Anyways heres some reccs
https://www.mangago.zone/read-manga/i_seriously_can_t_believe_you/
https://www.mangago.zone/read-manga/sankaku_twilight/
https://www.mangago.zone/read-manga/nirameba_koi/
https://www.mangago.zone/read-manga/golden_sparkle/
https://www.mangago.zone/read-manga/cupid_ni_rakurai/
https://www.mangago.zone/read-manga/dekoboko_sugar_days/
https://www.mangago.zone/read-manga/tadatada_suki_to_iu_dake_de/
https://www.mangago.zone/read-manga/bokura_no_tsuzuki/
Thankyou i guess its just teenage lol
Some bl recommendations with good smut and teenage high school romance
And question is it bad if a high schooler watched smut involving high schoolers?