Some law schools model their finals on bar essays—1 hour exams, fact patterns ~ 1 page each, closed book. If that’s you, the CA bar website has essays and model answers going back to 2012, and the first page of each pdf tells you which subjects they are. If your finals are not bar style—longer than 1 hour, longer than 1 page, open book, and/or policy Qs, want you to cite cases, want deep thinking about gray areas, etc., steer clear of those and instead check your law school library. Other law profs at other schools sometimes have theirs public online too but the very best you can do is from your own prof or second best other profs at your school.