The VX8 is well known for being rubbish in this respect. It’s the same as many super swish fancy handheld radios. There are radios that work is such environments, there has been discussion on here in the past, the search facility will help you find them.
From personal experiance and personal reccomendation, the following work.
Yaesu VX-170 (and all other family members)
Yaesu FT-270 (and familiy members)
Yaesu FT-60
Yaesu FT-290 (multimode)
Kenwood TH-79 (old dual bander)
Yaesu FT-70 (modern dual bander with C4FM digital)
FT-817 (multimode)
There will be others, but those above do work. I have owned plenty (and still do) that are unusable at such sites.