you will never find that and im sure about that. Just create your own prediction will be enough for you. People will think to share their forecast for monthly or yearly prediction but it's not for the next decade. How can you think if there was a website that was predicting the next decade? How accurate if if there's a website like that? Why don't you just create your own one like this
https://bitcointalk.org/index.php?topic=5381536.0 You are asking something that people can't even answer it. doing forecast for a decade and what in the hell is this?
Well, if it's for bitcoin, we all have our predictions about it. But if it's just a shitcoin that nobody gives care then it's impossible to give insights towards that coin. And this is applicable to all projects except bitcoin. I know that there must be something that OP is thinking about of what to buy and what to hold for 10 years but these people are right that there's no such platform in existence and even if there's a prediction by someone that shall happen 10 years from now, are you going to believe them?