question: how can I improve my patience and focus.
this is my big problem.
Chess is love by a lot of people for its deepness, there are many strategic and tactical possibilities that you need to consider in a game of chess. That's why in classical games of chess, each opposing players are given 2 or even 3 hours time allotment. But there are fast chess matches where each player is given 15 or 5 minutes. But compare to classical chess, the quality of fast chess games are not on par with classical matches.
If you don't have patience pre, then probably chess is not for you. Do you play online? If you play online chess, then I suggest play opponents who have 1800 rating and above. The moves of a strong player will give you something to think about. Also strong players who have a positional advantage that have seen the complete picture of a winning plan moves fast! Or probably why not read more about chess strategies, and tactics? It will give you more insight on chess. I suggest you buy the books of “Yasser Seirawan”, they are all enjoyable to read. His books are the ones that makes me appreciate chess. It's the book that taught why chess is great.
For your focus, just bare in your mind to never forget to look at your opponents last move, no matter how unsound it maybe.