If it was a week ago then yes, you should have been in the index and thus in the lines, that would be a question for your GM. However the difference between us and other leagues is daily sims. In stuff like the SBA there’s a few days between sims where players can get created and put in. Because we sim every day there’s no time to do so unless I manually updated the index for every single player created which would mean I’d be doing nothing but.
Also as @Jubo07 points out you hadn’t signed your contract until after the sim so there was no way for your player to have been involved because you weren’t on the team yet.