Basic skincare products for oily skin

What skincare products do people with oily skin use?

I only use ampoules, essences, and moisturizing cream during the summer.

It's a hassle to apply multiple products, haha, and my skin feels stuffy...

People who use a lot of basic skincare products really use this a lot. I assume they use it because it's good for their skin, right?

How many basic skincare products do you use?