Subaru Legacy squeaking/whistle coupling

Hello! I’ve been the owner of a Subaru Legacy 2.0R 2006 Limo switch for 3 months! I’m super satisfied with the car but now it’s getting worse and wanted to ask what that could be: My Legacy squeaks very loudly when starting up, especially who you let out the clutch with little gas. In the stand it squeaks/fells only sometimes but only at revolutions below 1000. But then not so loud. If I drive away with a lot of gas and the clutch slowly leaves out I can also sometimes complete it. t without squeaking… Even when I am in a high gear and get into the gas, you hear a short whistle. It sucks a lot and I’m afraid that even more stuff can go on who I don’t care about! Looking forward to feedback! Thank you! Best regards Michael