I have 70 errors in the Search console, What about you others? And how you guys reducing these errors?
Core vital is already a ranking factor.
See it this way,
CLS= Content shift, if your content shifts while user is viewing it does it affect UX. Yes.
Fcp and Lcp:- The first view is loading very slow, will the user be pissed. YES!
So it was already a ranking factor. Just the thing is now there is a metric to measure the same.
What will matter most is LCP, FID and CLS according to UX signal.
How can we reduce these??
I personally use flying press+cdn.
Most of these gets reduced to moderate warning.
You can also hire someone to optimize your site.
Use PageSpeed Insights from google to find out the details and fix them.
Have a look