suggest trusted site . thanks
i can't tell you exact site to invest, but i think you should stay away from gambling sites, don't invest there as you might lose money, better invest that bitcoin into mining site
Mining sites are also never recommended as a lot of them turned scam previously so no one trusts any cloud mining sites anymore.
So the best thing would be trading altcoins that can generate some good profits for you if you are doing it with a good capital.