Can someone recommend me a bdsm story with a caring respectful master who actually uses sa...

https://www.mangago.zone/read-manga/in_the_doghouse/

If you don't mind yaoi (I think there was a safeword)
https://www.mangago.zone/read-manga/my_sadistic_master/

https://www.mangago.zone/read-manga/ang_ang/

I don't know if this has progressed to safewords yet
https://www.mangago.zone/read-manga/jiwoo_s_master/