I don't know what kind of radio it is, but the factory radio doesn't sound good. With older cars, you can usually fit a standard built-in radio without any problems. I have one of these and had the appropriate connection for it. I would rather clarify whether a radio change is possible. That is, that you can install a "standard" radio. With newer cars, unfortunately, this is deliberately produced differently, so that a radio change must be carried out by a garage. If you type "standard car radio" into Google you will see what I mean. I hope I was able to help a little

Cable length 1.2 m https://ch.hama.com/i/00082165/hama-aux-in-adapter-fuer-becker-blaupunkt-vdo-auf-35-mm-klinkenstecker?bySuggest=00082165