Well in your post one of the first things you say is that you dont want to be a fighter. As a hobbyist, just do whatever feels right because you arent taking it that seriously. Not an insult either, just know that what you put in is what you take out. Also, its worth mentioning that it being your first time ever training, it would be pretty silly to expect you to understand an armbar escape, so at this point you didnt do anything detrimental. What I am speaking of is in the future if you wish to pursue grappling consistently and take it seriously.
If you wish to compete on a real level and get to an elite level of competition.. (world champion NOT intermediate NAGA champ) you need to fight your ass off which includes fighting tooth and nail to the end, running off the mat to avoid being swept, falling into the wall and yes, occasionally getting hurt in the process. Its hard work and it sucks, but if you want real results, you kill yourself on the mats for them. Im sure plenty of people will disagree with me and chime in with comments about that being a reckless thing to say or "well I compete four times a year and I train safe wah wah wah" but they won