You have breaks in your GND plane, potentially reducing the ability for return currents to flow properly.
You would be better bringing your tracks onto the Blue side as soon as you can so that you do not ad splits in the copper.
Without a silkscreen legend to identify the components I cannot comment on other problems as I cannot identify them to you.
But I see a pad where the track exits badly.
Research "teardrops" and either use those or come out of the connector pads with thicker tracks then thin them down where needed, this will prevent broken tracks when connectors move.