High bot traffic from Singapore. How to stop them?

Hello BHW,

I'm using custom domain blogger. Since yesterday (18th April 2019), my blog is receiving bot traffic from Singapore. This bot traffic contributes more than 50% of page views. According to blogger stats,

Pageviews by Countries: Singapore (Map doesn't show Singapore highlighted but showing other countries)

Pageviews by browsers: Chrome

Pageviews by Operating systems: Macintosh

I have checked Bot filtering in Google Analytics.

I would like to know how to block bot traffic or should I ignore?

Need help.

Thanks.