Bot Flight Mood Reducing Page Speed Insight Score

Dear Concern,
Recently I have added Cloudflare into my domain & my domain is connected with the Blogger Platform. I have connected my domain with Cloudflare due to Bot traffic. When I turn on Bot Flight Mode then It decreases my Page Speed Insight Score. It takes scores from 99 to 79 & while I turn off Bot Flight Mode then the speed increase automatically. In this situation, how to solve the issue? I want to keep the Bot Flight Mode as well as Good Page Speed Insight Score. Please help me regarding the issue. Thank You