How and where to find 3-week internships?

Hello!

My question would be:

How/where can I get a 3-week internship before the Christmas holidays?
The internship itself is not until after the Easter holidays 2024, but you must hand it in by Christmas.
My desired field would be something with IT software or hardware, but I spend a lot of time on computers and am pretty knowledgeable about them.

Just write links or page names.
I live in NRW, but I'm traveling by bus and don't want to write a specific place/city right now.

Thank you all in advance for your answers.

Best regards:

123Sukram123