I am on my second day of not looking at mainstream media and I feel much better. I would definitely recommend it.
To answer your question I personally am less worried about ww3 than I was this time last week. How on earth will the Russian army be able to cope with taking on NATO when they clearly do not have the resources to effectively fight Ukraine? This week Russian reps have done their normal threats but there has also been appeals for no more sanctions, a declaration that they mean no ill intentions by their actions(!). The rhetoric is changing slowly.
Who would be involved in ww3? Russia and Belarus v (almost) every other country? Who else would be on Russia’s side?
Obviously mine is a non expert opinion!