/usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.32' not found (required by minitube)

The correct answer to this class of problem is not screwing around with your install (aka creating a frankendebian) or pulling most of a different OS as a container, it's recompiling the problemtic software against installed libraries.

No, and attempting to do so will almost certainly bork your install.
The latest QT5 version of minitube is already in the Devuan repositories, I can't think of an "easier" way than using that. 4.0 appears to be nothing but a QT6 port and some cosmetic changes.

i ran into this issue on Devuan 5.0

/usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.32' not found (required by minitube)

there is a solution found involving pulling docker image of testing,
but this seems not vaiable for devuan

https://cplusplus.com/forum/unices/285889/

docker run -it debian:sid
Unable to find image 'debian:sid' locally
sid: Pulling from library/debian

sudo  docker run -it devuan:testing 
Unable to find image 'devuan:testing' locally
docker: Error response from daemon: pull access denied for devuan, repository does not exist or may require 'docker login': denied: requested access to the resource is denied.
See 'docker run --help'.

can this docker image for devuan be included?
or
is there another way to upgrade this package easily without necessarily upgrading to testing already yet?

thank you.