Go back and reflow all your solder joints so the solder flows through the board. They should all look like silver Hershey’s kisses. Some of the solder pads looks like there’s little no solder here. This is the most common new guy issue.
Post clear close up well lit pics of the front and back and the off board wiring. Chances are, if all the components and polarities are correct, you just need to go over your solder joints and reflow them.