Transfer WhatsApp messages from P50 pro to S22

Not sure if this is the right place to ask but it’s worth a try. So my brother in law made the mistake of buying a Huawei, after realising he can’t do anything with it he bought a Samsung. He has important chats to on his WhatsApp that he needs to move over but because the huawei doesn’t have google it doesn’t seem to working, does anyone have any advice?