Need an advice

I have completed my interview in Capgemini both L1, L2 rounds have been done, after completing my interview I am also done with BGV, and they have given my joining on 1st October 2025, but till now I didn't even receive my offer letter and date of joining also postponed, and now they saying budget issue, because of this i didn't even apply and attended any other interviews, what will be the next option? Is anyone there to help with this ?