Mavlink is a generated protocol. Pymavlink is one of the possible libraries for using and interacting with it, but there are also several other options. There isn’t really a “regular mavlink”, because mavlink itself is just an xml specification of messages and the parameters they use.
If they’re relevant, feel free to post them here (new comments bump posts to the top of the activity list, so I/we will see them even if the original post was years ago), but if they’re unrelated to the original question then it likely makes more sense to make a separate post for them.
I’d recommend you have a look through the How to Use the Forums post - it outlines various components of how to interact with and make/format posts effectively, and also includes a breakdown of the relevant resources that you likely want to search through before asking new questions 