Which are the funding options for a Postdoc in Denmark?
At DTU there are two postdoc programmes, Eurotech and H.C. Ørsted:


https://www.dtu.dk/english/research/research-at-dtu/postdoc-programmes/eurotech-cofund-postdoc
https://www.dtu.dk/english/research/research-at-dtu/postdoc-programmes/h-c-oersted-cofund-postdoc


More generally you might want to search for postdoc programmes specific to the university you would like to go to. Also ask your contact at the university for guidelines.

Last year the funding opportunities from Danish institute for independent research were mostly targeted at more established researchers, but maybe still worth checking out: https://dff.dk/en/application/overview-of-instruments

I do not recall Denmark having plenty of general postdoc funding opportunities. Life sciences might be more generous than other fields. You will not know if the European ones are out of your league without trying.