If you are paranoid about the circled heart (apologies if this is stereotyping but most of these queries are from people with relationship insecurities) that's the "digital wellbeing" icon, something that's baked into almost all modern Android devices, and nothing at all to do with dating apps.
One of the others is a standard "navigation is active" icon. The dot means "there are more notifications than fit on here", which means that whoever's phone this is doesn't bother closing notifications.