Can’t get out of plat3-D1 in ones

I’m champ 1 in 2s and play champs consistently so igs I’m in the right spot but being in plat feels so bad to say. Should I just keep playing and I’ll improve or am i below average

I’m champ 1 in 2s and play champs consistently so igs I’m in the right spot but being in plat feels so bad to say. Should I just keep playing and I’ll improve or am i below average