There are many, many, fewer animals now than even 50 years ago:
https://www.sciencedaily.com/releases/2016/10/161027113306.h...
58% of species are in decline
https://e360.yale.edu/features/insect_numbers_declining_why_...
Many fewer insects than 50 years ago
https://en.wikipedia.org/wiki/Cod_fishing_in_Newfoundland
After his voyage in 1497, John Cabot's crew reported that
"the sea there is full of fish that can be taken not only with nets but with fishing-baskets".[3]
and around 1600 English fishing captains still reported cod shoals
"so thick by the shore that we hardly have been able to row a boat through them."[4]
While individual human life has gotten better, it has largely been at the expense of every other organism on the planet.
For a logical conclusion (mostly) to this process, see "The Godwhale" by TJ Bass.
https://en.wikipedia.org/wiki/The_Godwhale
In it, people are the only animals left on the planet, as they've eaten everything else.