If you want to dismiss the demons that her Spirits fight like with Loke and Torafuzar and only count the ones she directly fought, then sure she only fought Jackal.
Everyone couldn’t scratch the Golems besides Lucy, Gajeel and probably Mira. Gray and Juvia blatantly couldn’t damage them either and only managed to harm Metro with internal attacks and UR, the same Metro who doesn’t even scale to his Golems seeing as the very same stuff that didn’t affect his Golems managed to harm him. Metro is trash, and Gray and Juvia are trash.
You might not realise but Lucy was fighting the Strauss Siblings at their peak. Of course she can’t beat them. Compare this to Gray who you think is stronger for beating the glass cannon Metro. Dude could barely beat two of the Siblings with a type advantage after Lucy hit them with Dress Mix (>>> Kyuubi Lisanna > Snake Lisanna > Taurus Dress >= Gajeel > Gray) and left them to fight a protracted battle against Skullion (bopped Tf outta Devil Gray) and Madmole (took FDKM to the face and was still going) who hard counter Elfman and Mira. All this while Gray recovered from what? A kick from Bickslow and Evergreen, and using his IDSM for 5 seconds? Gray is honest to god trash in 100YQ compared to Lucy and being stronger than him does not equate to sweeping aside Mira and Elfman.
Way to ignore context. Juvia isn’t part of the Quest, the arc was to introduce Diabolos and hype up the Dragon Gods, Team Natsu couldn’t do anything to Merc before Ignia helped out, the entire thing is a set up arc for the rest of the story. Rn we are in the third arc, the squad got sent to a dimension that amps them with Lucy having shown the clearest indication of better magic, she is by herself against one of Selene’s goons while the rest are paired off just to fight one themselves, she still has more Dress Mix to show off (and they are stronger than the rest of her Team besides Erza and Natsu’s transformations), said Dress Mix work based on how many Spirits you have out and we know Lucy can maintain 3 with the stamina aspect of 3 way Dress Mix being circumvented with a dimension that amps your magic, a new energy system that is looking to be a big thing in Elentir is based on spirits (guess who uses spirits from another dimension?) etc. There being a potential theme is not my entire argument but a small part of it. There is so much more evidence that points to the possibility that you elect to ignore because of this bizarre opinion that no one can step to the 5DG besides Natsu when Gajeel with a little help did just that against Aldoron.