iPod Touch Gen 7 - Unable to Activate

Try this Apple article, which although it says it's for iPhones, I believe has steps that are relevant to the iPod Touch: If you can't activate your iPhone or iPad (Wi-Fi + Cellular) - Apple Support.

Important points to note:

1. if the message is referring to Activation Lock, which was put on by the previous owner, you will need to contact that owner
2. ensure that your iTunes programme is up to date (read the notes below)
   1. Windows 7: note that if you are using Windows 7 (or 8.1), iTunes will not be up to date, despite what the message in iTunes will tell you. The most recent version of iTunes is 12.10.11.2
   2. Windows 10: on the day of writing this the current version of iTunes (for Windows 10 or 11) is 12.13.6.1
   3. Mac OS Mojave or earlier: if you are using a Mac with OS Mojave(10:14) or later, use iTunes
   4. Mac OS Catalina or later: if you are using a Mac with OS Catalina (10:15) or later, there is no iTunes. Instead, use Finder

What happened when you tried? At which stage did you see nay error messages?

By the way, I think you will need to use the direct (cable) connection, not Wi-Fi.