Unable to find Lightning Node
You need to have a channel. Otherwise there won't be any node announce messages with the gossip protocol. Lightning network explorers can't see you without a node announcement message.

The fact that you need a channel to announce your node is a measure to fight SPAM in the gossip protocol. It is described in BOLT 07. Even if you have a channel it takes some time until your node announcement has propagated through the lightning network and being processed by 1ml. So bring some patience