Long-time reader, first proper post, and it's about the top dating sites.
First message inside a day, or the top dating sites stops mattering because they've moved on. Photos matter more than the the top dating sites settings people obsess over.
Public place and own transport — same rules for the top dating sites as anything else. Once I set the top dating sites up properly I stopped touching it and results improved.
Reading the room matters more in dating apps than any setting you can toggle.