Squeak/Twitter – V-belts? etc.

Hello all, My Colt 1.1 75 ps Gasoline build year okt 2005 chirping after starting…the whole thing gets better during the ride and is then again soon away…today it was wet/cooler again. Is that the V-belt? Got the car now 3 weeks…at the beginning I didn’t notice that yet. Does there spray bring something? Then the giving of the gas makes a slightly whirring noise, but is very quiet. The exhaust vibrates in idle. I first thought about the cat or flex tube. But the car was 3 weeks ago at the TÜV and the AU values are good. Then I noticed that when the clutch pedal resets again, a slight rub can be felt in the last part of the pedal path like that of a metal spring, maybe it also comes from the clutch cable. However, this feeling is only during the ride. When the motor is switched off, you don’t notice anything… is normal. I had a friend of the car mechanic on it. It is quite normal and would be in good condition according to its age. What I also noticed.. can it be that the chassis is relatively hard? You can feel every pothole. Or are the shock absorbers more likely to be through? But also there neither the acquaintance meant anything nor the Tüv. Thanks and greetings, Hansi