@grocket12 The repository used by RasPI OS automatically redirects apt based on your location to the closest Rasbian repository mirror. If that mirror doesn't work for you, you can manually change the URL in /etc/apt/sources.list to one of official Raspbian mirror servers - https://www.raspbian.org/RaspbianMirrors.
@akamming I confirm the same problem and the same error. It seems to be related to some parameter in the config files (maybe retroarch or core options).
I solved this. I changed the analogue control settings at the bottom of the list to match the buttons (not the other way round). This game now works with two analogue sticks.
@Efriim no I haven’t tried that game. Thanks for finding the forum post about standalone psp exiting back to emulation station rather than the psp menu. Good to know since that was my main issue using standalone. Using the retroarch version now seems like a more viable option than it was before in terms of performance based on my testing and it is nice to have the GUI. But i will try this out on my experimental setup to try to confirm it works.