Add keyboard and mouse to Xbox and PS4 (and when you plug in your keyboard and mouse it automatically places you with keyboard and mouse players so it's fair) : r/apexlegends
SteelSeries Apex 7 RGB TKL Gaming Keyboard Blue Switches for PC/Mac/PS - GameXtremePH
XIM APEX Keyboard and Mouse Connection Adapter for PS4/PS3/xbox one/x box360 | eBay