Paddington 3 may not be happening anymore, but that's a good thing, as it shouldn't have happened in the first place. Paddington 2 set such a high bar, with the film being considered one of the best movies of all time, meaning that many viewers eagerly awaited Paddington 3. However, Paddington 3 has already run into a plethora of issues, and with the deck so heavily stacked against the threequel, the Paddington series should stop while it's ahead.

https://screenrant.com/paddington-3-not-likely-good-reason/