My suggestion would be a compressor. Either PGDynamics or Classic Compressor (one included and the other free) to boost the vocals and make them more 'present'. These are 'free' product suggestions, of course there are are others; some free some far from free. You've already noticed the need for one by your post.
'Classic Compressor' on first vocal preset is often enough to see what the difference is.
I think the free set that includes Clasic Compressor is spelled Kjaeurhaus or something close.


With compressors you have to listen closely for noise (and background noise). It may end up needing some more 'cleaning up' on the track to make the compressor behave as desired.

I do not work here, but the benefits are still awesome
Make your sound your own!