Any safe way to grow my bitcoins ?
This way is very safe:
Just claim for free shares at my U2cloudmining system.
Then you do what you believe is the best for you:
you accumulate free shares using the different free options more or less risky.
Impossible to lose...you can only earn.
Have fun...
Why not?
Minimum risk is this way:
claim shares for free...sell for satoshi...claim shares for free...sell for satoshi...claim shares for free...sell for satoshi...etc...etc...
Of course less profit but faster payout.
It's a way...but not my prefered...if I were you...