Strength is the way
CrossFit endurance is easy to build. But you should understand that it’s a game of strength too. If you are not strong, you won’t be able to lift heavy weights with that much easiness. Do pull ups, push ups; build muscles or any other thing to build strength. So, whether you are doing CrossFit at home or hitting the gym, make sure you work in this area.
Doing proper squats
Certainly, nobody can do Mat Fraser crossfit unless you do it with proper technique. Mathew ‘Mat’ Fraser is known for his perfection. So work on your skills and improve on it. You can take somebody’s help who can record you so that you can analyze it later. Take a professional help to know the proper techniques and know what you are doing wrong. CrossFit new England also provides technical help and helps you honing your skills.