Although there are legitimate charities, investment platforms, and e-commerce sites that accept payment in cryptocurrency, the pressure to use a virtual currency should be considered a significant red flag.
Also if you are contacted through an unsolicited message, via email or any other channel by an entity claiming to be a charity organization, this should trigger a significant red flag. Local charities shouldn't have the information to be able to reach out to people personally.
Protect your internet activity. Be mindful or how you submit contact information to various sites, like email, phone number or KYC documents. Scammers can follow your online track and plan how best to attack you.
Also, if contacted by a possible scammer, don't panic, assess the situation and seek legal advice if necessary.