Custom message for logged out or non buyed course users

Can there be an option in which we can change the message for non logged in users or non buyed course users.

Overview:
We have videos per lesson and content. I want to show 10 seconds for free or some content for free then ask them to pay for full video/content. So is there any option by which we can use lesson level custom message like we do in paid Membership pro plugin.

I tried integrating paid membership with learnpress but Learnpress over rules and shows its generic message (login and enroll to view this content.)