you could have used a live Linux, as in burned on a DVD. if you used latest Ubuntu version then it had python3+ so you didn't have to install anything to encounter lacking dependencies. and when you are done, you just remove the DVD. or you can use a Linux designed to be live and not leave any trace.
ill keep that in mind when doing this next time
is it hardware wallet?
it is
in any case if you are creating the seeds for each cosigner on a different device and a different computer
this is the only thing i didn't do. i used the same laptop to initialize all three hardware wallets. they haven't plugged into anywhere else since.