I speak fluently French, Italian, German and can manage plenty of Swiss German common expressions as well.
Yet, the rules, oh boy, not sure how you will take this, but from my point of view Swiss world of rules makes the northern Germany feel as flexible as a South American country.
When something must be done like A, it is A, not A- or A+, zero deviations.
That is quite unworldly. I worked on large projects both in Switzerland and in Germany. These are totally different cultures. The number of laws and the degree of bureaucracy in Germany is many times greater than in Switzerland (only surpassed by Italy). In Germany everything is forbidden that is not explicitly allowed, in Switzerland it is the other way round. In Switzerland everything can be negotiated; try negotiating with a German official. Good luck with that.
I lived in Geneva from 26 to 28 years old, as mentioned in other replies, come back to Switzerland every time I manage to, and have several good Swiss friends.
I also had to help a friend of mine newly moved into Baden in 2018 to settle in, so I know what bureaucracy she had to face until she was 100% done with everything and could carry on with her life having a proper bank account, address, mobile phone, internet, new car registration, the whole package.
There are plus and minus to both approaches, the rules approach favours more the society overall as everyone gets the same, while the flexible approach kind of favours the individual.
And as mentioned in other answers I enjoyed my time in Switzerland, and come back every time I manage to, so trying to make my point of view without attacking anyone.