I find teflon tape to be not great not terible for threaded water fittings. Sometimes I find it is just too thin and needs to be wound too many times.
In these cases I find that a bit of caulk covered afterwards in tape works best.
There is also a product like a thread covered in teflon (looks kinda like dental floss) but I never tried it because it was too expensive. Maybe as a professional it saves time.
Also I found that the direction you wind the tape matters. It is easier if the female/receptacle/socket part that needs to be screwed does not go against the end of the tape but in the same direction.
Also I found that the direction you wind the tape matters. It is easier if the female/receptacle/socket part that needs to be screwed does not go against the end of the tape but in the same direction.