[1] - Outdoor Research - https://outdoorresearch.com [2] - Patagonia - https://patagonia.com [3] - Arc'teryx - https://arcteryx.com
And as others have mentioned, it's all about layering!
Look for companies that are long standing and have good warranties. These companies have good reputations to protect, and are aware that buyers of outdoor gear tend to be very loyal to companies that treat them well. My family personally swore off Columbia after two of their coats failed us catastrophically, for example.
They may be odor resistant, but for me they still get smelly after two or three days. A lot better than cotton, but not odor free.
The downsides are that even their lightest fabrics are too warm for summer, and the fabric is a lot less mechanically sturdy as cotton. It seems to tear easily. Most of my older icebreaker shirts have a few holes, even though the fabric still looks like new.
I'm also in Berlin and I use Uniqlo's HeatTech undershirt and long johns under jeans/shirt. They're pretty cheap (€10 each) and it makes a lot of difference. I never feel cold. A good jacket is also essential. Downfeather Jackets are my favourite.
Other than that it's just a hoodie between shirt and jacket, scarfs and "hand-shoes". The Coronavirus mask also helps during windy days.
I smiled reading that literal translation of "handschuhe" <3
I would recommend having a look at https://varusteleka.com, they're the biggest outdoor/surplus store in Europe, and they ship just about anywhere. Their wool flannel shirts and field shirts are the best I've ever owned, as are their worker wool pants, and they have enough merino clothing to layer for any weather.
Aside from the own brands, they often get very good surplus winter gear in, like thick Swiss knitted wool sweaters, Czech parkas, Finnish wool pants and so on.
My current winter outerwear workhorses are a Czech parka and a pair of Finnish M65 wool pants, total cost less than €50. With long johns and a woolen sweater underneath, I have yet to encounter winter weather that would make me uncomfortable.
I don't think of this as a technology or expensive, though. They are somewhat pricey, but can be worn for many winters and thus have good value.
If you have Decathlon nearby, start with them and ramp up as needed.
I don't like puffy winter jackets so I wear a long wool coat instead.