Lighthouse Mobile scores does not cross 90 (currently ~85). https://ift.tt/3zFHke6. Struggling from the past few days how to get this right

Mobile scores does not cross 90. The reason given: the main-thread work. But, I've even reduced the components being displayed by using "display: none" for certain section on mobile. Despite that doesn't alter at all. What should I be doing? The following link will yield the scores:

https://developers.google.com/speed/pagespeed/insights/?url=https%3A%2F%2Fwww.skylarkinfo.com%2F