You have to learn the difference between not enough, too much and just right. Not enough and you risk failure, too much and you have hydraulic action keeping the pieces from joining, plus the squeeze out. Just right gives total coverage, no slipping, only a few beads of squeeze out, mating surfaces fit and bond correctly.
I use a 1/2" natural bristle chip brush and I cut off the bristles with scissors so they are about 1/2" - 3/4" long. This gives you full, stiff bristles to lay down, pick up and spread the glue. No sticky fingers, no finger prints, no drips of glue on everything, no glue on other surfaces. Squirt on a small bead, then paint it out with control. Acid brushes are too wimpy, cards and squeegees don't allow easy pick up of extra, getting into mortices or other tight spots. Use an open jar of glue to dip the brush in when you have small or other parts where precise glue application is needed. Drop the brush in a jar of water, clean it at the end of the day, it will last a long time. Glue mess will be a thing of the past.