"I peaked Imm3/Radiant in episode (1-6) but I'm hardstuck Ascendant right now because of my team and how bad the rank system is"
Translates to
"I got worse and others got better and now I'm washed AF ngl"
Meh. It's just your rank. It doesn't mean anything at the end of the day. I'm in silver, and yet I have diamond friends who I play better than and bronze friends who could easily win a game I would struggle to make close. The silly little icon next to your name on the friends list isn't a reflection of your individual skill by any means.