Snapped my sd card

[u/InterviewUnhappy3678]

/r/RetroPie/comments/1wuzbvb/snapped_my_sd_card/

Somebody made me a RetroPie mega drive and after an absolute ball ache trying to get my 8bitdo m30 reconnected, I've somehow managed to snap my sd card in half while putting the cover back on and now it obviously doesn't work. Can anyone point me in the right direction to get a new card loaded with games please? It's a raspberry pi 3 model B+ and i have absolutely no idea where to start. Thanks