Latest and Greatest Rom Set???

[retepam]

Pi Model or other hardware: HP HP EliteBook 840 G8 Notebook PC / 11th Gen Intel® Core™ i5-1145G7 @ 2.60GHz × 8 / Mesa Intel® Xe Graphics (TGL GT2)
Power Supply used: N/A
RetroPie Version Used (eg 3.6, 3.8.1, 4.1 - do not write latest):Where do I find this? I don't see an "about" in the menu. But I did just set this up from the retropie website about two weeks Built From: Downloaded from the website. Installed on top of Ubuntu 22.04.3 LTS
USB Devices connected: None
Controller used: 8BitDo SN30 Pro
Error messages received: None
Emulator: MAME

I recently began updating my retropie build to a newer machine. Previously I was using the mame4all emulator but I know get an error that it doesn't work with x86-64. I have two questions.

1. Is there something I could do that would allow me to use this existing rom set?

2. What is the most reliable MAME emulator I could run and which rom set should I be getting?

I am not looking to get every rom from every country.

[retepam]

I figured it out.

Using the lr-mame2000 emulator worked. Turns out I had the 0.375b pack and I saw in the documentation that this optional emulator also worked

[mitu]

Mame4all/Mame2000 are really old versions of MAME, meant for (very) low powered deviced. On your PC system, you can use either FBNeo or current Mame without having any performance worries, thus taking advantage of game fixes and new additions to arcade emulation that were brought in by the last 24 years.

[barbudreadmon]

@retepam There is a section about choosing the correct arcade core for your needs in the libretro documentation, you should read it, mame4all/mame2000 is basically the worst choice you can make here.