Mixpanel or DIY user tracking?

My startup is looking to track individual users across our Saas app. We want to know how many people create a certain type of report, how often they successfully create a metric, how many people use the search bar.

We currently are passing events to Google Analytics, but of course GA gives aggregated data, we want to know which individual users did these actions etc.

I know Mixpanel is often recommended for this type of tracking and analysis. Is there competitors we should look at, including just tracking the users in our own database?