what are your best explanation of why havent scientist discover mapinguari despite there so many expedition to find new species in amazon?

Mapinguari are considered as one of most possible cryptid by many people in this subreddit but why havent scientist discover Mapinguari yet despite there so many expedition to find new species in amazon?

In 2024's peruvian amazon expedition,scientist find 27 new species in Alto Mayo Landscape including four new mammals, eight fish, three amphibian and 10 butterfly species. https://www.conservation.org/press-releases/2024/12/20/27-new-species-including-four-mammals-discovered-in-human-dominated-peruvian-rainforest All of these new species are small animal so if scientist can find many new species of small animal in amazon then why havent scientist find new large mammal species like mapinguari?

There 3 possibility:

1)mapinguari is not real animal & just a myth

2)mapinguari is real animal but now are extinct

3)mapinguari is extremely rare animal & live remote part of amazon

So for people this subreddit who believe Mapinguari exist,what are your best explanation of why havent scientist discover mapinguari despite there so many expedition to find new species in amazon?