Earth magnetic force/field is very weak, cannot even deflect lightning direction. How can it deflect  high speed moving charged particles?

How can it protect earth from Sun's radiation or so called/fake solar wind?

Sunlight is not charged particles, so earth magnetic field cannot deflect Sunlight.

If there are charged particles hitting at earth, atmosphere will absorb them and protect earth surface. No need any magnetic field to protect us.

It is all lies.