Yes, Bitcoin can be used in situations like that, and people actually have used it to send donations to conflict zones. Its borderless nature makes it possible to bypass traditional banking restrictions, which is really valuable when normal payment channels are blocked. That said, it’s important to use trustworthy organizations and wallets, because scams can happen even in humanitarian efforts.
bitcoin is certainly the best thing to use in such situations because the government is less likely to be able to control it and restrict it from going to the deserving hands but as said if possible avoid having to go through exchanges or anything that the government still may have access to because it might not reach the intentioned receivers after all