meaning of "last time out"

Here's a tweet from Aston Villa's X account. What does "last time out" mean in the sentence? Is it a phrase? Or is it just "last" followed by "time out?" I can't look it up in the dictionary

Last time out at Villa Park against Brighton.

Source: Aston Villa's X account (The video shows Aston Villa scoring six goals against Brighton)

This is a common BrE way of saying

The last time they played the Brighton team at the Villa Park football ground.

In general last time out means the previous appearance and can be applied to many, usually public, events. For example "Last time out Dobbin came second in a horse race at the Knackers Yard track." It can have a different meaning (final), as James K says, but you can usually work it out from the context.

"Last time out" is also used in American English as an informal way to refer to the most recent occasion on which a recurrent activity or event took place. It can be a sports match, a company picnic, a family trip to the zoo, a favorite hike, a bike ride, the test of a booster rocket, almost anything.

Last time out, it splashed down in the Indian Ocean.

Last time out, we saw a grizzly bear at this place on the trail.

out in this locution has a sense something like "underway". A wooden paraphrase: "On the most recent occasion on which this [rocket test, bike ride, family trip, hike, etc] was underway..."

It's "last time" and "out"

Going "out" could mean going outside, onto the pitch, to play football.

"Last time" can mean the "final" or the "previous," so there can be some ambiguity here. However, it should be clear from the context.

So this is about the previous match at Villa Park, or perhaps the previous match at Villa Park against Brighton. (Or it might refer to the final match against Brighton of the season)

The line isn't a sentence, you'd understand the meaning of this fragment from context (but you haven't provided context).

Fortunately, it is pretty easy to search for this. It is the title of a highlights video showing the success that Villa had in their previous match against Brighton at Villa Park. TBH, the easiest way to understand the meaning of this is to look at the video it describes.