You can't find any website, trader or group that can predict cryptocurrency value after 10 years. 10 years was a really long time and many things can happen within that year anyone can make an assumption but not predict it, they can use previous years graph or information to make an assumption in the next 10 years but I think focusing on smaller time frame maybe a maximum of 1 year is much better than in 10 years.

I would like to ask why are you asking about it? Are you planning to buy cryptocurrency and hold it for 10 years?