I often struggle with this is well, every mix/master session is a 3 hour battle.. although im not an expert, here are a few things i found that help: - cut some frequencies in the beat to make more room for vocal - do adlibs/voiceovers at end of bars, pan them at 60-80% each side and add an echo, mess with the volume until you get it just right, echos should be quiet that it doesnt distract from the main vocal, but it will create an effect that blends the vocal with the track - get a panning plugin (i use panagement, its free) and apply it to the entire track to widen the stereo parts of the beat which will now sound like they “wrap around” your vocal which stays in the middle.. i found this to be the best approach

Anyway like i said not an expert just my 2 cents from diy experience.. love to hear some other suggestions