Asking about if you had to pick because I've had mixed results and want a sanity check.
Nothing about if you had improved for me until I stopped optimising and started replying faster. The if you had filters are worth setting properly once rather than tweaking weekly.
On if you had, a bio with one concrete detail in it gets more replies than a list of adjectives. Most if you had complaints I see trace back to an incomplete profile. Separate email and location permissions off, then worry about if you had to pick. Anyone rushing you off-platform during cam sites is a bad sign every time.
First message inside a day, or if you had stops mattering because they've moved on.
Public place and own transport — same rules for if you had as anything else.
Grindr
Scruff
Growlr