Usually frustration (wants to greet) or discomfort (wants space). Both look loud.
Leash frustration is among the most common issues trainers see. You are far from alone on this one.
All of these are in the Pawty Marketplace, filtered to retailers that deliver to your country.
This one is safety-critical or emotion-driven. Work with a qualified force-free trainer or a veterinary behaviourist rather than doing it alone. See a veterinarian for any sudden behaviour change or sign of pain, and a qualified behaviourist in person if your dog has bitten, guards with snapping, or panics when left alone. Read our approach.
Pawty also has 99 training skills in 3-minute sessions you rate 1 to 5 paws, streaks that freeze instead of reset, and a care calendar. Free. No subscription, no paywall.