Take the SAT again, and try the ACT, but don’t fixate on your score. A 2130 is good enough for most colleges, and the overwhelming majority of students would kill to get that score. I certainly wouldn’t encourage you to compromise or sacrifice any other interests or activities in order to prep intensively for another round of tests. There’s a decent chance that your score will rise modestly, but focusing all your energy on a chimerical increase is unwise. You do not need to look at test-optional colleges, but you should apply to a good balance of “reach,” “match,” and “safe” colleges. Everybody should. Harvard, Yale, and Stanford would be long-shots even with a 2300+ score, and so identify colleges where your chances range from good to certain, add a few reaches, and know that you will get into an excellent college with the stats you have right now.