My makeup looks cakey when I wear it, but dull when I don't... What on earth should I do?

There is a thought that comes to mind first every time I put on makeup in the morning.
“Why is my skin looking so uneven today?”

Even though I followed the exact same skincare routine as yesterday, some days my foundation adheres beautifully, while on other days, dead skin cells come to the surface, causing it to cake and break down.
At times like this, the more I look in the mirror, the more self-conscious I become, and my mood gets unstable right from the start of the day.

On days when my skin is in good condition, a light base is fine, but strangely enough, on days when I have an important appointment, my skin always feels like it breaks out.
So I end up applying more coverage, which makes it thicker and feels stuffy, and then it just keeps falling apart... This cycle is stressful.

I'm always worried about cleansing, too.
If you double or triple cleanse to remove makeup thoroughly, your skin becomes drier the next day, and
I feel uneasy about doing it half-heartedly because I'm worried it might cause problems.
I keep having no idea which one is right.

These days, I’ve become sensitive even to words like pores or elasticity.
In the past, I used to just think my skin looked a bit dull when I was tired, but
Now that I zoom in, I find myself paying attention to even the smallest changes.

When I see people with good skin on social media, I naturally end up comparing myself to them.
There are days when I feel like I'm the only one with so many skin concerns.

I wonder if I should switch my good cosmetics,
I wonder if I should start dermatological care,
Or maybe I need to fix my lifestyle habits first; my worries just keep piling up.

There is a lot of information, but I think actually establishing “my own skin standards” is the hardest part.
Has everyone had an experience like this?