.....the call our golf 2slow for a reason

IMO I would sell it and get a 1.8t
As to the other things
The 2.0l is know or eatin oil so keep it topped up
Discs may be warped or worn? Will have to just check
Also check your engine mounts and all yor subframe bolts etc (anything that can come loose)
As for the bot will have to strip the handle most like but Ido t know
And for the clutch maybe try bleeding it if. It it may just be the clutch that is worn