How can I add more events in Magento without using personalizations

If you do not want to use personalization for any reason, but you do want to use different events, you can ensure that click and conversion analytics are turned on. If they are, then you can still obtain data on your users behavior. 

Generally speaking, you may want to read this general guide on planning which events to send.  

You can add additional events using code. See our guide here on the topic of adding new events by registering the custom hook afterInsightsBindEvents(algoliaInsights).