I need advice...
Sounds like, you need More practice, and 'pattern recognition'; As to, how to take advantage, of the weaker moves .. that, Lower, than '1400' something players, are more prone, to play. o:
Ps. - The faster, the 'time-control', one plays ;The More important, seeing 'things' at-a-glance, {plus, how to take advantage}, becomes !