Climbing-Silver Pleb

Alright, so I've always had this "ranked anxiety" where I was scared to play so I would place in Silver 5 and play maybe a few games then just go back to norms. Which is frustrating me now as I've been playing this game for three years but nothing to show for it. I know I'm better in terms of how mindset is better than the people hovering around me elo but I know I'm here because of me, not teams. So I don't believe that I "deserve" any higher elo, but I'm confident I could climb and really want to now. So any future tips for S8? I one trick Cassiopeia and have learned all the matchups and have gotten quite good at the champ, I accept losses and don't easily tilt, I CS consistently, ward, etc so I've followed all of the basics but I feel like there's more I could be doing and just not seeing. Thanks for reading.

[cass-cry]