Some tips: get a good book and really study it, a rather inexpensive way to improve.
Get a chess coach; more expensive, but they can identify your weaknesses and give you more personalized instruction.
Playing longer time controls can help you to be more thoughtful and eliminate dumb mistakes.
YouTube videos can also help, but personally, I suggest you don't hop on the opening bandwagon...
I really want to get better at chess. I can't really play well, so can you guys give tricks or tips to help?