All accounts start competitive around 2350 (quick play doesn’t matter), and early games matter most. I ran it through the model at Initial Competitive Skill Rating, Decrypted, and got that you should have placed at 2773.
| SR | GAME | CHANGE |
|---|---|---|
| 2350 | 1 | -95.4911 |
| 2255 | 2 | 91.6402 |
| 2346 | 3 | 87.7893 |
| 2434 | 4 | -83.9384 |
| 2350 | 5 | 80.0875 |
| 2430 | 6 | 76.2366 |
| 2506 | 7 | 72.3857 |
| 2579 | 8 | 68.5348 |
| 2647 | 9 | 64.6839 |
| 2712 | 10 | 60.833 |
| 2773 | 11 |
You placed noticeably lower than that (at 2384). My guess would be that your early games had poor performance as well, but that is just a guess. Most people with this record do place plat.