If you are looking for previous (older) versions of Naviate you can access those via https://www.naviate.com/downloads/
It's behind login, so if you don't have an Symetri-ID, please create one.
If you are using Naviate 2023/2022 then you only need to be assigned a licence in MySymetri and download and start using the version you need?
Remember that Naviate 2021 and older is not supported by the new license portal - https://my.symetri.com/. We are using Flexera licensing on those versions.