I am not offering you an excuse, just a solution.
I like you have been playing since GT1. I also got my PS1 because of it and my PS3 when GT5 was released. Hell, I started my search for a PS5 when GT7 got a release date.....
All I'm saying is if you still want your league to have racing, use GT Sport until they get the lobbies fixed in GT7.
And for those lamenting the lack of news regarding fixes...the blog post and website announcement are announcing the updates. Bug fixes will be in the patch notes after the update drops.....be patient. We don't know what they are fixing, only what they are adding...