First time back on iRacing after a few months, two F4 races in a row im the only one?

Havent played iRacing in a few months. Ive gotten back on the F4 fixed at Motorland Aragon which is one of my favourite/best tracks.

I did the 3 and 4 pm AEST races and in both I was the only entry.

Not only that, but the results for the day had races with 3 and 4 people.

Months ago when I raced, the F4 was consistently hitting 20+ people during these hours. Has something changed?