how do i add emulator to my r36s v12 clone (i have emuelec)

I didn't know how to flash or smth so i just set it aside but now i know how to flash and more.

I just installed emuelec because every other one didn't work and its the bare minimum.

I installed everthing but there was no game on it, and it didn't have any other emulator on it just acrade games that just show the pictures of the games that dont even work :/

ive tried everthing darkos,arkos4clone but these didnt work :(