This came up a couple years ago -- see
https://forums.ootpdevelopments.com/...d.php?t=356993. That mentions issues.
It is an extremely difficult task. It took a long time and a lot of effort to get as far as compiling what I think is a good list of the games from 2024. It is not perfect for some of the reasons mentioned there.
Personally, I am not going down that road of trying to compile something like that again. Even if that was good enough for 2024, without researching it I assume the population of teams in D1 is a little different a couple years later, presumably with a couple more teams.
Trying to do something generic as opposed to matching a "real" schedule may actually be preferable, e.g., to get consistent numbers of games among teams. That still has the enormous challenge of dealing with the however many conferences of various size and having some interaction (non-conference matchups) between them.
This may be a non-starter for you, but if you were more interested in a bunch of college teams than having the exact D1 configuration, then making a schedule becomes a more reasonable task if it is something like 16 divisions of 16 teams (256 total teams) or 40 divisions of 8 teams (320 total teams).