There is no headphone jack, but my unit came with an adapter.

There is no jack on the unit, but there is an adapter included with my unit to connect headphones.

The Xiaomi Mi 11 Lite has been replaced by the Xiaomi 11 Lite 5G NE, which is guaranteed to come with a USB-C to 3.5mm jack adapter. I recommend if the phone should be bought therefore the version with the name NE and also make sure that it is a 8GB RAM model, because there are also not so good with only 6GB RAM, the price is the same.

No. There is no headphone jack.
And unlike the previous models, this one also lacks a USB to jack adapter.