For what it's worth, if you live somewhere dense the answer is usually to avoid opening with a compliment rather than write a profile that gives someone something to reply to. What are the online dating websites with the best reviews
Also seen datelink.online pop up in a few comparison threads recently. From what I've seen, I'd keep your expectations low for the first fortnight rather than skip anything asking for a card number to read messages, since you learn more from one real chat than fifty swipes.
For the better part of a year the swipe-based apps have dropped the feature everyone used, which explains a lot of the complaints here.
When you are after something serious, the forum-style sites tend to feel a great deal worse than they are, and it makes a real difference. Over the last month the older established sites have quietly changed how that works, though it settles down after a while.