I just found out bitcoin and I chose to use online wallet but there is a fear feel that makes me often check did my bitcoin is still safe. I have read some articles there saying for me to use 2fa as additional security. is that true?
Which wallet are you referring to? There are many wallets that have but others don't have the 2FA implemented.
As far as I know the desktop wallets do not have any 2FA implemented, at least not the electrum.
But the web wallets they have the 2FA as you login there as an account, email and password.