What if out of 4 independent variables, there is one independent variable which is not correlated with the other independent variables? Is the null hypothesis rejected or accepted?

Null Hypothesis: There is no significant correlation between the independent variables which are the Benefits, Barrier, Susceptibility, seriousness and Cues to action

Alternative Hypothesis: There is a significant correlation between the independent variables which are the Benefits, Barrier, Susceptibility, seriousness and Cues to action

Interpreted findings:

Benefits, Barriers, Susceptibility, and Cues to Action variables show multicollinearity or are highly correlated with each other. As for the Seriousness variable, it shows no significant correlation with the other variables.