Do you try to request on the support of Rollbit since they surely have copy of their previous ToS.
I remember a website that does this archive aside from what you mention but I already forgot it. I think I saw this tool being used on scam accusation board by investigator of issue related to the casino.
IIRC I saw it being used by @holydarkness or @LoyceV?
That'll be archive.today.
They [I guess] randomly redirect you to the mirror sites they have. So far, as far as I can remember, I have .is, .to, .md, .ph, .it. Nonetheless, the result would be as what loyce provided above,
I do have my "archive" of ToS in my gallery, as I made new screenshots of casinos ToS everytime a case require me to point out their ToS instead of recycling the old ToS I provided on older case. But that won't work as it's just a snippet of the exact clause [and one or two that's right above and below it] I'd like to point out and I have a feeling OP wanted the whole ToS here.
And my "archive" did not work that far.
Back in 2021 I would be still busy with scambusting ICO projects and not focusing myself on cases and disputes between players and casinos. I don't think I have any snippet of any casino's ToS from 2021, even on my older device.
I guess... we can ask Rollbit to provide a copy of that, I think it's very likely they have it archived in their internal system. And I guess I can ask whether they'll be kind enough to provide it for us, but I don't think I would go with that hassle for someone that
do not want to waste too much time explaining why.
So, I'm afraid OP ought to try to request Rollbit themselves.
Normally these things could be found on the wayback machine (web.archive.org), but for rollbit it doesn’t appear. It’s easy for someone to have saved them. I do not want to waste too much time explaining why