Bench press & deadlift form check

[1bio]

Hi,
Could you watch 2 videos of me doing bench press and deadlift and tell me what's wrong with my technique?(I think generally everything is wrong). I also experience specific problems with these 2 exercises. In the case of bench press, every time I do this exercise, I feel pain in my left shoulder at the lowest point of the bench press. My lower back hurts after deadlifting. What specific mistakes in my technique are causing these pains?
Bench press - YouTube
Deadlift - YouTube
Thanks for your answers.

[Mark Rippetoe]

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