Where and how do I collect my UK visa in Germany?

I am German and I applied for a UK visa using the online form. Please excuse my naivete, but I have not dealt with any of this before and I am just starting to see all the details that I am missing.
First, I realized that I do not know what a visa is pyhsically. Is it a card like my ID, or more like a sheet of paper, or is it a sticker and/or stamp in my passport?
Then, I realized that I have no clue how I will get hold of my visa once it is granted. Since I applied online, I have not been at any "visa application center" or the like. Will I be informed about this once the visa is granted? Will I get it in Germany or once I travel to UK for the first time? Will I have the option to receive it via mail? Will I have to give away my passport for some time, and if so, for how long?
Some more information requested in the comments
I applied for a Global Talent visa (initially Skilled Worker, as mentioned in the comments, but this changed) via the online application service of GOV.UK. I will stay there for at least three years.
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Where can I get a UK visa in Germany?
The British Embassy Berlin maintains and develops relations between the UK and Germany. Access to the Consular Section is by appointment only. If you are in need of urgent assistance call +49 (0) 30 204570, available 24 hours a day.How do I receive my UK visa?
Attend the UK visa interview.How do I get a visa for England from Germany?
Germans and some more citizens do not need a visa to travel to the United Kingdom. If a visa is required, a personal application (personal interview, fingerprints, etc.) must be submitted to an Application Center in Berlin, Dusseldorf or Munich. Expect a lead time of 1 to 2 weeks to get an appointment for an interview.How long does it take to get a UK visa in Germany?
Processing time The average waiting time for an appointment is currently 1 week. Once you have submitted your application at the visacenter, the processing takes around 15 working days (In some cases it may take longer).How to get German Employment Visa within 20 days
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