I messed up!!! so i was trying to align the leds perfectly on the edge of the pcb but first i counted there should be 20 LEDs(5 per side), then i realise there should be 18(two opp. side with 5 leds, and 2 opp. sides with 4 leds), but later i reallized that xiao rp2040 will be on a corner so have to reduce 2-4 more leds so in simpler words i wasted a whole hour of my life figuring out how and where to place leds on a pcb!!! will restart later!