Google Kw planner shows 2k+ but Bing shows 50

Hi, there are lots of keywords which are 2k+ monthly searches as per google keyword planner but Bing keyword planner shows only 50 searches per month. And this is for the majority of the keywords and this is the problem I am facing. Can't decide which one to take.

Any tips to actually know the real thing and how do I sort out?

How do I even determine keywords in Bing if almost all are like this?

Try other keyword finder tools like Kwfinder and keyword revealer. That way you'll be able to tell which one is more accurate.