Im confused is old method for atari 5200 not working

i tried old way of making atari 5200 to work i came up empty and help shed light on subject would be greatful like what core to use and folder structure

not sure if the core is messed up or doesnt like retroarch module for rocketlauncher ui but i notice settings missing in the core options for latest mame can anyone confirm that? any input is good it works in mame by putting game and bios in same folder zipped up but it dont work in retroarch mame core so something is stopping it

RetroArch [INFO] :: Does not have enough samples for monitor refresh rate estima tion. Requires to run for at least 4096 frames.

is the error im getting now not sure how to fix it tried several drivers

That error is unrelated. It’s for debugging purposes and shows up any time you run for less than 4096 frames.

oh so if i run over that game should run?

No, I just meant that the actual problem must be elsewhere.

hmmmz well i dont know what core to use and the folder structure so thats what i need to find out

i did get it to kick in and out says loading game but doesnt load

last time i used enabled cli and messcore doesnt seem to work now

i wonder if i can load up another core that works and trick it into going into core options