I have created an account, what I do not like is that the balance must have at least a few satoshis, you cannot create an account with 0 sats, but it's great and with zeus it works very well.

Check also LND accounts
https://docs.lightning.engineering/lightning-network-tools/lightning-terminal/accounts

DarthCoin

bitcoin

Is there a way to create a wallet that is watch only but lightning?

Yes, use LNBits
Here are some guides where I explained that scenario:
- https://darthcoin.substack.com/p/the-bank-of-lnbits
- https://darthcoin.substack.com/p/lnbits-for-small-merchants

TLDR: 
- create some lndhub accounts with your LNbits instance.
- open Zeus or Bluewallet and scan the lndhub QR for invoince only.

Done, your users can only receive, not send.

Same works with BTCpay LN bank plugin.