I am using Bollinger Bands in my trades, but I have only used it for a couple of days,
so I can't say that using it is very effective, so my question is, bollinger bands only use
is providing support and resistance? or is there other ways I can use bollinger bands in my trades?
Really depends on the system you use. It can be effective in some system and also in some trades but there's no single indicator that's effective for all. So you should always weigh and test your system. Remember to start as simple as possible.