I dont think you're unusual at all in being afraid to know more. People who are afraid have some grasp of the situation! and the imagination to guess at some of what -could- happen.
Personally it helps me to have an overview of the situation and to keep the bigger picture in mind, with some sort of superficial awareness of all the threads that go into making that big picture. Not knowing makes it worse, for me. Rather face the devil we know than not having any idea what might happen.
A lot of it - and I mean this kindly, I have the same rollercoaster as you sometimes - comes down to our emotional involvement rather than absorbing reports at an intellectual level. I find a balance of the two helps. These threads help keep my feet on the ground especially as there is such a huge wealth of knowledge and experience in many different areas and it all contributes to a greater understanding.
When it gets too much, as it does sometimes, it helps to go for a walk/swim and keep away from the screens. It's easy to get sucked in and we -do- all have our own lives. We're doing what we can, but the fact is that in the UK and many other countries at the moment we are safe.
I do think educating yourself helps. It helps you assess for yourself how realistic something is when the media reports something. For instance, the Mail's ridiculous and extreme nuclear fear mongering, when you have more knowledge of what's going on and have learned jsut HOW much Lavrov lies and bullshits, well, you see the headline and instead of being scared you can mostly eyeroll. Knowing more helps you understand why various weopons are being sent and others aren't, and notimagain's excellent posts early on about why sending aircraft would be very very difficult.
You have to find what balance of info works for you, to keep your feet on the ground and your head level :)