Where should I put my money?

Hi. I started racing a week ago and so far I focused on Formula series with Ray FF1600.

Formula series are my fav, but I like sports car as well. I saw many videos of Fia F4 on socials from iRacing so I thought that was the category to go with once I reached a good level, but in these days I haven’t seen official races with F4 appearing in the dashboard so I was wondering if I’d waste moneys.

For F4 how much would it cost me for all the tracks too? Also, for sports car what do you suggest to go with?

I’ll stick around with the free cars and tracks for a while, but I’d like to plan my future on iRacing as well..