You might look into the “curly girl” method, don’t worry about the name it’s just what it started out being called in the 80-90s. It helps people with any texture besides stick straight hair tame the friz. It’s been pretty helpful for me to allow my actual curls out without being a puff ball. There’s a community driven Google doc that has the concepts and best products. It wouldn’t surprise me if you actually have all wavy hair, many people find that once they stop using products that weigh down hair, their hair texture increases.

https://docs.google.com/document/u/0/d/1Q6Dj9WAZxlfBhJSyS5on2rw3-if5cOV3oV-dQ3B0AHA/mobilebasic?pli=1

Since you are in Germany, buy a sebo. Great power and supposedly inexpensive since they are made in Germany. Some of them come with 10 year warranties and replacement parts are readily available.

Also if you want repairability, do not buy a Shark. They have 900 models and getting replacement parts can be extremely hard because they don’t make the same model for very long. Dyson is slightly better in that regard but not much.

This is a crazy recommendation but I think Canada dry plain seltzer is basically as good as topo Chico. I got some at a gas station the other day cause I was dying of thirst and it was as good as topo Chico my wife thought so too.