Lower SAT Scores?

So I got my scores back, and I did worse than I expected. I predicted high math and grammer, and I thought reading was somewhat easier than before, despite the fact that I was sick.
However, I did a lot worse than I expected, even though I didn’t study as much. How is this possible?
I took SAT 4 times, and my 3rd was 1490 (800 math, 690 ELA0, but this time,
I got 1390!! (770 math, 620 ELA). Math was harder than usual, and so was grammer, but my reading dropped a lot!
I have to send all my SAT scores to some of my colleges, ex. UC’s, so will this significant drop be bad?
I heard that UC’s only consider highest SAT, so will my 1490 overlook the 1390, even though it is my most recent?

anyone^^^