Unless you are using an integration like Shopify or Magento, you'll need to implement the events yourself.
Generally speaking, if these events are implemented on the front end, you can troubleshoot by checking whether the event payload is sent. See the troubleshooting guide for general guidance.
See this guide on sending events with instantSearch.js, and see this codesandbox with this implemented. You'll see the example payload by typing "events" into the network search bar after you send a click or a conversion event.
After you have confirmed that the events are being sent, you can review the events debugger for more information on whether you need to add more information to those events.