Was it the pool or the format?
If new profiles stopped appearing, you have a population problem and only a bigger app fixes it, which means Tinder, Plenty of Fish or Badoo depending on where you live. If profiles kept appearing but the app felt like hard work, you have a format problem, and Bumble or Coffee Meets Bagel are the softer versions of the same intent.
What you will miss
Prompts. Hinge scores highest of the mainstream apps on profile quality for a reason: a like that lands on one specific line makes a first message easy. Bumble comes closest, OkCupid trades prompts for questions, and Tinder gives you almost nothing to react to. Go in expecting to write more openers yourself.
Do not pay in week one
Every app here will show you its best week first. Run the free tier for seven days with your existing photos, count how many new people appear on day six, and only then decide whether a subscription is buying you anything.