Last year I played a solo CCA game, the scenario was Trebonius' Foraging Party during Caesar's invasion of Britain in 54 BC. Cassivellaunus' Britons gave a good account of themselves, with the Romans winning 6-4.
https://bucellarii.blogspot.com/2022/11/trebonius-foraging-party-54-bc-command.html (https://bucellarii.blogspot.com/2022/11/trebonius-foraging-party-54-bc-command.html)