I wish I had a better answer. Find a good book or set of resources and go through it again. A good method might be to go through chapter by chapter and skim through the subjects and the problem sets, if you see something that isn't "slam dunk" easy then consider reviewing that material and just reading through that chapter and doing the problem sets until it makes sense. Similarly, if you're working through something in calculus and you hit a speed bump, try to figure out exactly what you're struggling with and then go back to your algebra/trig materials and focus in on that until you've learned it.
Khan Academy has a ton of videos on algebra and trig on youtube, so that's also another good resource. If you have the money, consider hiring a tutor for a few short sessions, they can be remarkably affordable. Also, if you're in college there are study groups and office hours, so consider taking advantage of those.
The most important thing in math is to make sure you're actually learning the material rather than just skimming over it and passing the tests.
You can also try various games, though sadly I don't have any recommendations.
Khan Academy has a ton of videos on algebra and trig on youtube, so that's also another good resource. If you have the money, consider hiring a tutor for a few short sessions, they can be remarkably affordable. Also, if you're in college there are study groups and office hours, so consider taking advantage of those.
The most important thing in math is to make sure you're actually learning the material rather than just skimming over it and passing the tests.
You can also try various games, though sadly I don't have any recommendations.