I can sympathize, as I am consistently matched with summoners that I deem below my skill level. Several things contribute to this:
- I am not as good as I think I am. Generally, none of us are. If I am matched with a solo queue Bronze III, it's probably because I am actually quite close to their play level despite being Silver V.
- Individuals in Bronze do not have enough games to clearly establish who they should be matched with. The algorithm is not perfect, but over time it should more closely approximate perfection.
- Teams are constructed so that their average skill is equal. If you are matched with someone who's skill is lower, the intent of the matching is that you will balance the team.
Chances are you will climb as you add more games to your name. Have fun!