None of these sound like something I would approve. A wayspot must meet criteria stated here: Wayspot Criteria — Wayfarer Help Center
None of these sound like a particularly great place for exercise, exploration or being social. The benches and lamps sound like simply infrastructure. A roundabout normally does not have safe pedestrian access besides just not being intrinsically interesting. And memorials should be for someone important to the community:
I know that it is frustrating when everything you submit gets rejected. I recommend going through that Criteria Clarification Collection section and studying that criteria link before trying again. If there are specific ones you really think should have been accepted, you can share screenshots from your contributions page for advice. I do better discussing one at a time.
If you want to share the location, some people on the forum are good at looking at the map and making suggestions. But be sure to protect your privacy if you do.
I hope we can help you be successful!