WHERE CAN I TRUST 100% TO INVEST MY COINS for garentee payback
CAN ANY ONE SUGGEST ME ?
These sites where you can invest your Bitcoins are almost all the same, they will become probably a scam at a time, if Bitcoin price increase or decrease, so never believe them 100%.
Otherwise, if you want, just keep your Bitcoins, and see if the price increase to sell them, and make profit.
The best thing is to hold your coins for the future as that will be much secure options and you can earn good returns in future when price goes higher, and it has no risk.