at op here is a selection of noise query threads
https://www.lfgss.com/search/?q=noise+inTitle:true+sort:date
the most comprehensive is here
https://www.lfgss.com/conversations/149464/?offset=1300#comment12934750
if you don't get an answer here i don't think you ever will
cracked frame pedals cranks saddle bb chainring bolts
are the main culprits
@dicki started
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at op here is a selection of noise query threads
https://www.lfgss.com/search/?q=noise+inTitle:true+sort:date
the most comprehensive is here
https://www.lfgss.com/conversations/149464/?offset=1300#comment12934750
if you don't get an answer here i don't think you ever will
cracked frame
pedals
cranks
saddle
bb
chainring bolts
are the main culprits