I have used this amazing tutorial done by John Malcolm, his youtube channel : https://www.youtube.com/channel/UCjenxjukGduLMXhcN532hTw go and check him out!
Interesting triangular shape done in 3Ds Max '17
This model is free, if you like the content I make you could buy me coffee
https://www.buymeacoffee.com/tomciomalina