Q: hey mike, are is there any way to strengthen your grip? im shrugging more then i can hold, and i dont want to use wrist straps

A: The best way is to keep doing shrugs and deadlifts without straps and pick as heavy a weight as you can so that your grip gives out first. This will underexercise traps or lower back (in case of deadlifts), but it's the surest way to make your grip catch up.

Alternatively, you can use straps to push your shrug or deadlift weights past the grip limitation, but then separately exercise grip by simply picking up heavy dumbbells or barbell and holding it 30 seconds or so to failure. Some people also like farmer's walk exercise which the same thing except instead of standing in one place, you're walking from wall to wall or something like that. Walking gives you a little more focus

Whichever way you choose it'll basically come down to training your grip by holding heavy heavy weight for a period of time (30 second is a good target, but you can vary it anywhere from 10 to 60 seconds).