Follow the link above for more details on how you can support Ukraine.
If you want to learn more about russian warcrimes in Ukraine you can check out russian war crimes you can also check out Bellingcat's Civillian Harm in Ukraine which is updated regularly.
There is an active investigation ongoing by the International Criminal Court in the Hague.
Come Back Alive - Organisation based purely on supplying the Ukrainian Army and volunteer forces with defensive equiptment, technology, and training. The emphasis is on saving lives and the organisation does NOT purchase lethal equiptment. They offer card payment options through Fondy.eu, crypto payments, and SWIFT payments.
Superhmans Center - Organisation focused on providing support to adults and children affected by the war. Specialising in prosthetics, reconstructive surgery, rehabilitation, and psychological support.