Will try to keep this brief, looking for some advice on improving as while I enjoy the game, it can be demoralising to get killed on jnet or at GNKs and this discourages me from wanting to play SCs or Regionals, which is something I do really want to do ultimately.
Short background: Been playing a few months, bought about a half-complete set with my housemate, we have played a lot (multiple nights a week) and have now got almost everything. We have built decks for each faction (mostly from scratch, based on what we were familiar with, plus a little net-decking too along the way) and play them against each other in all permutations before revising them and then playing again. I’ve played the BBTLs and a whole bunch of random games on jnet, plus a couple of GNKs (both of which I had pretty poor results in).
I just wondered what other people#s experiences have been, especially if like me you’ve joined the game more recently, without the benefit of growing with the card pool over the years. I find that as soon as I step outside of the comfort zone of our home games - where I know the decks and my opponent pretty well - I struggle to have a clear thought process and feel time pressure a lot more, leading to a whole lot of mistakes and ultimately a lot of losing.
I don’t mind losing games per se (although I would definitely prefer to be winning!), but it’s more the feeling of not really often understanding why I’m losing and being a bit overwhelmed by the entire range of cards and deck archetypes which are out there in the wild. I try to watch a bunch of streamed games and listen to the commentary, have started listening to some podcasts and also try to read a lot on here and in Slack, but I’m struggling to feel like I’m progressing much.
I know eventually I will lose interest if I’m just getting destroyed constantly and I don’t want to end up quitting a game I do really like after investing time, effort (and money) in it. I don’t expect to become a great player (or even a very good one) overnight, but I just wanted to see what advice the good folks of Stimhack could give me to help me move forward.
So please, let me have it - all advice, opinions and viewpoints welcome! If I can provide any more info to help you to help me, just let me know! Thanks in advance. 
While not as helpful as actually playing through each of those games, it helped me internalise a lot of standard lines of play and counterplay that I could then apply to my own game.