Skincare struggle advice and how to reduce pore

Hiiii! I’m 21F and I have very combination-to-oily skin. Since it’s summer, it gets worse — I need 2–3 blotting sheets just to control the oil, and I always use each sheet only once. My skincare routine includes a cream acne cleanser, RL Dokdo toner, Skin1004 brightening serum, and a moisturizer. At night, I use a Meditherapy retinol 3 times a week instead of the serum. My pores don’t seem to be improving, and my skin often looks dull. I don’t really struggle with acne—just 3–4 pimples a month—but I do have a habit of picking at blackheads and whiteheads I can’t resist. My whiteheads also seem to appear almost overnight, even though I don’t wear makeup. I’ve realized I’m not using any exfoliator, so even after cleansing my skin still feels oily and not fully clean.

If anyone has similar skin or has dealt with this before, I’d really appreciate feedbacks or any product for managing oiliness, reducing blackheads, and improving the appearance of pores. Pls pls pls help a girl out!