Which is best bank to open a online saving account ?

Hi, I’m looking for an saving bank account to open online without need to go bank offline. This is just to park some money for sometime, as if it’s main account I just keep spending it. Main purpose is only to park some time and then once I get some lumpsum saved, around ~4/5L, will use it for any investment or need spend at that time. My main account currently which I use is Kotak and ICICI and I had used HDFC some years before but not using now. So I’m looking for some other bank account or the new age neo banks etc kind off with better return / rewards or offers but the core not to visit any bank offline for any purpose. Thanks