¡Hello, Fay mate!
I'm also a Lulu JG player (back from the epoque of the Devourer item and about half a decade ago) and I noticed your Guide; it already gave me some original insights on certain items/itemizations I wasn't so much familiar with ( Galeforce, Guinsoo's Rageblade, Phantom Dancer). Your guide is still relatively recent, so many of the concepts in there are still fresh and quite precise in the whole question of making Lulu JG more feasible. I know this because I've being replaying Lulu JG since mid-2021 to the current season in 2022, and very recently I have started developing my own Guide on Lulu JG (in this same account) on my experimental approach (there are very few LoL items I didn't try to itemize as the 1st item for Lulu JG), in case you'd like to take a look and maybe let me know of your valuable feedback.

If you're still around, currently, I have a question concerning your Runes: I still don't properly understand how the main rune Press the Attack is better than some other on Lulu champion. For instance, currently, I alternate between Fleet Footwork and Lethal Tempo on Lulu JG, and I know many occasions when it is favorable to take one instead of the other; but I know very little about Press the Attack, yet I suspect it has it's utility in some approach, build or niche of opportunity. Maybe I'm lacking some play style tricks in order to make it work in an optimal way; for me, it just feels like it's not as reliable as the other 2 runes on Lulu. Thanks! Cheers.