I know some software wallets like Electrum but I would like to have an online in order to access it from anywhere.
using electrum mobile app should fit your needs, unless you don't have a mobile device
if you insist using online wallet, blockchain.info (now .com) might be the option
it's the most wide use web/online wallet and they also actually have mobile app
you should understand risks and consequences before using any wallets, specially online wallets