If you worked for me (or any other of about 20 PO's at my company), you'd be comfortable telling me that you were struggling. You'd explain the challenge and your estimate to completion, and I'd either reshuffle our priority list so that you could park the task and pick another one, or find someone for a pair programming session with you. That's the common practice, and nobody should care whether you're yellow on Teams or use a mouse jiggler, as long as you communicate your work and challenges.