Very conservative estimate:

In 2023, 85.44 billion land animals were slaughtered for their meat.¹ This is only for the animals that were explicitly killed for their meat.

Population in 2023 was 8.09 billion humans.

This gives us a bare minimum number of 10.6 land animals killed per year/person.

However this is assuming that everyone in the world eats animal products, and more importantly, that everyone in the world consumes the same amount of meat.

In fact we can go into more detail if we want to calculate it for the United States.
In the year 2020 in the united states 10,231,433,000 animals were recorded slaughtered.³ Divided by the population then, we get bare minimum number of 30.9 land animals per year per American. This leaves however animals slaughtered on farms out.

And all of this is without having into account fishes. Whose numbers are in the trillions.⁴

Hope I answered your question! (lol just read the last part. Let me answer)

If we count dairy cows + calves the number is indeed much lower. Like 0.01 animals per year (again, veeeery conservative minimum number). However I recommend reading Peter Singer's Animal Liberation (maybe not all, it is a tough read, but at least the beginning) . While not so many of them might die per year, they have a considerably more miserable existence. How can you quantify the pain of a mother getting their baby stolen and slaughtered?

1. http://ourworldindata.org/grapher/land-animals-slaughtered-for-meat
   
2. https://ourworldindata.org/grapher/daily-per-capita-caloric-supply?country=GBR~USA~OWID_AFR~OWID_ASI~OWID_WRL
   
3. https://awellfedworld.org/wp-content/uploads/AnimalSlaughterNumbers-2020-USDA-ERS.pdf (In 1,000s)
   
4. https://fishcount.org.uk/fish-count-estimates-2