Rumble seems to be interesting. I have no experience there, just recently created an account. The con is Rumble has much, much smaller audience than YT. The pros are
- as ChatGPT promises, Rumble allows monetization from the start
- Crypto seems to be one of the major topics there. They even announced a sort of USDT wallet there. "The announcement follows Tether investing $775 million in Rumble in late 2024" - cointelegraph.com
The fact that the audience is much smaller means you might waste your time by uploading on Rumble or you can be more noticeable there. Narrow topics like TCG won't probably work there but more general talks... who knows.