I had the brain fog. I switched from atorvastatin (dizziness) to pravachol (no dizziness), and then again to higher effective dosage of rosuvastatin (still no dizziness). I went from LDL 152 to LDL 83.
But I have high Lp(a) and so I'm prescribed a baby aspirin every other day. This counteracts the Lp(a) clotting effect but doesn't fix its genetic cause.
It's a journey.