Digital nomad under German contract

Many people dream of this and most fail with the practicalities.
It is almost impossible to do this legally.
You need a work visa (and declare the derived income for taxes) in every country where you do work. This is an extreme bureaucratic effort and many countries don't even have a visa category for people doing freelance or remote work.
Some self-declared "digital nomads" work while on tourist visa, under the radar, and get away with it for a while. This is illegal, risky and therefore cannot ne recommended (nor are illegal acts allowed to be discussed on this forum).
In most countries you must tax all income (even if illegally gained) - and not doing so is another criminal offence that those self-declared "digital nomads" happily commit (which makes them social vermin, too).
If you maintain a base and employment contract in Germany, you will be taxed and have health insurance there, too - although tax treaties with certain countries (not all!) will allow you to claim back the German taxes (deducted at source) if you can show that you taxed it elsewhere. For the (complicated) details, consult a tax adviser knowledgeable in international income taxation.

Thank you beppi for your reply. A work visa of course is something I´ll get. I want to have it done the correct / legal way to not run into issues. From what I know I would not do my taxes in a foreign country if I don´t reside their for more than 6 months, but I will definetly talk to a tax adviser beforehand. Generally it would be something like a business tripp into a different country. If this is not possible I will then "simply save more money" to do a sabatical year to travel the world. Thanks a lot!