FPS to play on low end PC

I've been playing AA3 with my twin boys that are nearly 9.

I have to create a server and then we can only play just the 3 of us. I am looking for a similar game we can play together that will work on their low spec laptops. That other people still play so its not just Dad!!!

Any ideas welcome please.

They have Geo 140 Minecraft laptops, N4020 Processor (1.1Ghz) , 4Gb ram, 64Gb storage and I think its only got intel UHD 600 Graphics.

They are great for minecraft, roblox and they play AA3 pretty well.

Must be possible

Quake II System Requirements
Minimum system requirements:
CPU:
Pentium® 90 MHz processor or higher or Athlon® processor
RAM:
16MB RAM required for Windows 95/98, 24MB required for all other supported operating systems
OS:
A 100% Windows 95/98/ME/NT 4.0/2000-compatible computer system (including compatible 32-bit drivers for CD-ROM drive , video card, sound card and input devices)
STO:
25MB of uncompressed hard disk space for game files (Minimum Install), plus 45MB for the Windows swap file
Sound:
100% Sound Blaster-compatible sound card
ODD:
Quad-speed CD-ROM drive (600 K/sec. sustained transfer rate)
NET:
Supports network and Internet play via IPX and TCP/IP
Recommended system requirements:
CPU:
Pentium® 133 MHz processor or higher or Athlon® processor
RAM:
16MB RAM required for Windows 95/98, 24MB required for all other supported operating systems
OS:
A 100% Windows 95/98/ME/NT 4.0/2000-compatible computer system (including compatible 32-bit drivers for CD-ROM drive , video card, sound card and input devices)
STO:
25MB of uncompressed hard disk space for game files (Minimum Install), plus 45MB for the Windows swap file
Sound:
100% Sound Blaster-compatible sound card
ODD:
Quad-speed CD-ROM drive (600 K/sec. sustained transfer rate)
NET:
Supports network and Internet play via IPX and TCP/IP
Recommended peripheral: 100% Microsoft-compatible mouse and driver
NOTE: GLQuake II Additional Requirements
- 24 MB RAM for all operating systems
- GLQuake II supports some OpenGL 3D accelerator cards