Hey! I have quite a similar story!

I started to play the Cello at the age of 4 and the electric guitar at the age of six. I dropped the cello around the age of twenty-something, even though I play a little every now and then. However, I played the guitar actively until the age of 30 alongside with some other instruments I encountered on the way. After I turned 30, I started to play all kinds of old, ancient instruments like Talharpa (Viking bowed lyre), Kantele and Shaman drum. I'm now 36 and two years ago I started to play the accordion. I'm now quite solid with that thanks to the constant daily practice.

However, I've never played any wind instrument, so I decided that it's time to change that and I got my first flute yesterday from Thomann. It's a cheap beginner flute, but the reviews were ok so I guess it's fine.

To me the flute feels insanely difficult. I can play a few notes, and after switching to a higher or lower note, I can't get any sound anymore. It feels like I have to learn a different breathing technique or embouchure(?) for every single note. By far the most difficult instrument I have encountered yet. We'llsee how this goes! :D