The angle doesn't show if he was offside or not. If he was then 100% agree that offside was the right decision, there is no way that was a deliberate play of the ball by defender, he is putting a foot out to block a pass. Great work from the officials.
🚨 Deliberate Play Klaxon 🚨
And it's an absolute cracker!
If the opposition player had no control over this touch on the ball, then offside is the correct outcome.