I think you did put it into the wrong mod folder. since u updated it there would be two folders, as indicated above, put it into the Mods-v1.16 folder.
another question would be what do u mean by excetuted. if u mean that u unzipped/unpacked them then put them into the mod folder. then check to make sure it is in the right folder.
if not u should unzip/unpack it
also, for information what ending did the file that u downloaded have .zip, .7zip, .rar ect.