Man pages matching name mtr in section 8:

mtr.8.en	debian 10 / mtr
mtr.8.en	debian 10 / mtr-tiny
mtr.8.en	debian 11 / mtr
mtr.8.en	debian 11 / mtr-tiny
mtr.8.en	debian 12 / mtr
mtr.8.en	debian 12 / mtr-tiny