It is not as if Luffy doesn't care about his crew......like in FI, when Zoro and others got captured, Luffy is the first one to react and wanted to save only to be stopped by Jimbei and others.....
In Zou, he said he will protect Robin or praised about Nami or even in the first place, he visited WCI because of Sanji...even Judge asks why would he go as far as infiltrating yonko territory just for one person....
In the same WCI, Luffy was willing to cut his own arms to rescue Sanji when Pudding told them truth....
In Wano, Luffy fought Kaido in first place because he hurt his crew....
At the same time, I agree that in raid, there are not many interactions between crew because Oda written the raid full of samurai centric up to 1019...