My skin is red and swollen... Why is this happening?

hello.

I woke up yesterday and suddenly noticed a redness on my face, so I'm asking.
I didn't use any particularly irritating cosmetics, and my washing and skincare routine was the same as usual.
There are red spots here and there on the ball.

There is no itching or stinging sensation.
And when I look in the mirror in the morning, I see tiny pimples here and there. Is this because I use oily cosmetics?

I recently bought a new sunscreen, but it makes my skin really oily.

In this case

• What could be the cause?

• Are there any management practices that should be avoided in the current situation?

• Are there any treatments or products that can help with calming or improving it?

I would like to get some advice.
thank you