I hear these mixes all the time of songs that have the deepest, most engulfing bass, yet, the vocals still just hover over the mix as if the bass never was there. Anyone know how engineers actually do this?
Getting great bass while not drowning out vocals??

Achieving a balanced sound where powerful bass doesn't overshadow vocals is key for immersive audio experiences. To strike this harmony, carefully adjust your equalizer settings to enhance bass frequencies without overpowering midrange vocals. Experiment with speaker placement and room acoustics to optimize sound distribution. With precision tuning, enjoy deep, resonant bass while ensuring clear, articulate vocals remain prominent.

And I usually sing with quite high notes. Sometimes there are songs where I play very well at the beginning, but I can't control the later parts and the notes often break. I still haven't been able to fix this problem. Head Soccer
Try these to improve it
Apply a low frequency boost around 60-80 Hz.
Use side-chain compression triggered by the vocal track.
Apply multi-band compression to control the low frequencies.

@essamattougui,I think you should focus on breath support, practicing gradual pitch increases, and proper warm-ups. Enhance diaphragmatic control and consider vocal exercises that target stability in the upper register.