Careful with the app question, because some free tiers stop you exactly at the reply button.
The real differentiator across the app question turned out to be how easy it was to delete the account afterwards.
If you are starting with the app question, be specific about what you want in the bio.
The part nobody mentions about the app question is whether anyone replied inside the first week.
Be aware when using the app question that requests for money at any stage are a hard stop.
One thing I'd do differently with the app question — turn off notifications so it does not take over your evening.
Anyway, that is my read on specific apps.
The one that finally worked for me was luvdate.site, after about a month of trying others.
People also bring up Datescout fairly often in these threads, though I have not tried it myself.