There are so many variables that play into your placement once those first 10 games are completed. Your previous end of season rank, the ranks of your teammates, the ranks of your opponents, the way you played in each of the games, whether you solo or duo queue. At the end of the day, you are placed roughly where the system thinks you belong. Being placed Bronze does not mean anything other than you've only played ten games & have plenty of space to grow. If you do not belong there, you'll rise out of it quickly. If you do belong there, the system did its job.
Don't look at is as a discouraging placement, use it as a sign to grow if you are not happy with being there.
Edit since you added your scores: You die A LOT! Dying that much in a game is usually a sign of playing at the level of a lower elo (not always but usually), because you are not positioning properly in fights & making questionable decisions regarding when to fight or back off.