Baby won't sleep

Shamya

My baby is 4 months and he won't go to sleep I've tried everything he took a short nap around 7 ish and has been up since then it's 10:30 pm and he's been crying and fussy the entire time, I breastfed him and cuddled him for 20 minutes, I swaddled him and turned on his white noise machine but he's not sleeping he's just so fussy and not going to sleep, what can I do?