They missed an opportunity to have a PS2 mouse on the PS2 : r/ps2
Gaming" PS2 mice? - Other Hardware - Level1Techs Forums
PS2 Wired Mouse 1200dpi Computer Office Mouse Matte Black PS2 Gaming Mice For PC Notebook Laptops Non Slip Ergonomic Gamer Mouse
SANOXY USB to Dual PS2 Keyboard Adapter for Keyboard, Mouse SANOXY-VNDR-Dual-pS2-blu-2port - The Home Depot
HP 599888-001 | Optical PS2 Mouse - Serverworlds
NEW VINTAGE 3-BUTTON PS2 MECHANICAL MOUSE (Non-Optical) | eBay
NEW GENUINE OEM HP BLACK PS2 PS/2 3 BUTTON COMPUTER MOUSE OPTICAL SCROLL WHEEL | eBay
StarTech.com Replacement USB Mouse to PS2 Adapter FM USB mouse to PS2 Adapter USB to PS2 Adapter GC46FM Mouse adapter PS2 M to USB F - Office Depot
Thanks to @El_Topo_54 advice I found a working mouse for my PS2. I tried Half Life 2 and Soldier of fortune :) . Any other games I should try with this? : r/ps2