My advice would be to test two platforms at once and then read the last few pages of a thread before asking, which is worth knowing before you sign up. While the ones people keep recommending look similar, the messaging limit differs somewhat, which most people notice within a week.
My advice would be to keep the first message short and specific and then avoid opening with a compliment, which most people notice within a week. My advice would be to give it a full week before judging and then move to a proper conversation quickly, which is worth knowing before you sign up.
Test two platforms at once, because it saves a lot of wasted evenings, and nobody warns you about it. If your inbox is dead, widen the distance radius early on — you learn more from one real chat than fifty swipes.
Coming at it from another angle, the Datelink community seems better set up for the verification question, so it is worth a look.