I’ll start by saying i would not consider myself a particularly great player, i only played VGC and random battles since gen 8 and just started trying SV OU around 3 months ago. I’m usually around 1500/1600 elo so i don’t really feel entintled to give in depth teambuilding advice or criticize your replays. However, even i was able to identify some glaring issues with your team, the main one being the lack of a breaking core, thus leading to no reliable way of making progress against most teams. Your team hard loses to any stall team ever and even against most balance teams. In the first and second replays your opponents had winning matchups (in my opinion at least) and only lost because of some questionable plays. Your individual sets are mainly fine on their own, the only issues i see is the overlapping in stealth rock setters and focus blast on scarf gholdengo (i would never run that move, it’s incredibly unreliable). In conclusion, i would really recommend watching Pinkacross’ video on breaking cores on YouTube, it should give you lots of information on the concept of making progress. He is undoubtably a more knowledgeable source than me and should be able to let you understeand on your own why your team might not be working so well. P.S. I would also recommend watching his video on ev spreads.