I always hit Pro Rank like a brick wall

So I'm a pretty new player, I started in November of last year and made it to Pro rank a couple weeks later. The first time it was a bit of a slog from Rank 3 to Pro. Since then I've had an easy enough time getting to Pro rank but every time I seem to hit a wall as soon as I make it there.

Sometimes I'll be on a big winstreak (this season it was 10+ wins) but start losing almost immediately in Pro. I'm not sure if it's psychological or what (I do admit watching MMR tick up or down is stressful) and I often prefer Draft as it feels less stressful for me even though there's actually more on the line in that mode.

Does anyone else have these types of issues? I feel like I'm a decent enough player and I don't feel like I make any egregious misplays often anymore but I still feel like I'm consistently stacked up against better, more experienced players.