Broken link

Hello,

I have found a number of 404 and broken links in my niche on many website

I am noob.

What should I do?

Do I need to ontact the webmaster, and ask him to replace the 404 with a link pointing to my website?

What if these websites are low ranking in Google or low PA/domain autorithy?

Should I care about them or just contact only the big websites with high Domain auth. and Page auth.?

Just create the page and put a 301 direct to the correct page if the webmasters don't respond. Not sure you have many other options really.