thank you very much
If I use 8333, considering that others will also connect to me, won't my internet security such as accounts, social networks, wallet, etc. be compromised?
It won't. People can connect to you via port 8333 but Bitcoin Core should be the only program that is listening on that port. Bitcoin Core does not reveal any sensitive data to anyone else and thus you should not need to worry about that.
Opening a port is limited to what programs listening to that port deals with the data. In this case, Bitcoin Core will not reveal anything sensitive or identifiable to you to your peers. It is purely transmitting blocks, transactions, peer info, etc.