Maybe work on your open guard passing when other guy is seated. HE chased you a lot. When you stopped trying to stand up in his guard he was able to work his guard game better. The first time you were in his guard you started standing up when he wasnt holding your head down. The second time you were in his guard he didnt have to hold your head so he had a free hand to work with and you wernt trying to stand up again
Might get more advice if you have a real name. A picture also helps so people know which person you are in the video. Also would probably get more advice on 10th planet technique related questions, using 10p techs, or have more forum posts