All of this is easier if you talk to your customers more. Build a system for yourself that will allow you to have those touchpoints.
Build systematic feedback loops or die from ignorance
Discovery → Customer Interviews
The simplest way to do this is to write a template email for yourself that you can send out very easily, that essentially says like, 'Hey, thank you so much for using the product. I would really love to hear about your experience so far and get your feedback. Do you have 10 minutes to talk on the phone?'
The death of customer discovery is friction. If you ask individuals to do customer discovery, they will not do customer discovery.
Your sales team is a research team, and if you don't view them that way, you are missing out on half the value.
Seeing the sales team and the go-to-market team as this really great asset that can help you as a product manager get closer to the customer. Sales and the go-to-market teams in general could be your biggest asset to helping you get your job done well.