Can't upload Excel (my workout)

[Hypertrophy]

My Workout #1 (the program I do and need to change, IS, indeed 6 days ON, 1 day OFF

but my Workout #2 (the one I modified so it fit better for my goal of mass gaining), is 3 days ON, 1 days OFF (total: 5/7 days ON, 2/7 days off)

3 on, 1 off, still means you are lifting 6 of 7 days???
Add Stiff Leg Deadlift on Leg Day for Hamstrings.
Seated Z Bar Curl? Do you not have a limited range of motion, being seated?
Either way, drop it and add Hammer Curls or Preacher Curls.
Modify the Tricep Routine, by doing Close-Grip and/or Skulls.
Chest needs more compounds movements. Flat Bench, Incline Bench, Decline or Dips to target chest, then finish with Flyes or Cross-overs.
You gotta have Bar Bent Rows, Deadlifts or Chins in a back workout, or it's not a Back workout!

[SayHelotomylilFriend]

3 on, 1 off, still means you are lifting 6 of 7 days???

No, I do a loop of 3 days ON, 1 day OFF - 3 days ON, 1 day OFF etc....
so after the 1st week it's always 5 days ON, 2 days OFF
But someone told me I should do 2 days ON, 1 day OFF... Should I ?

Seated Z Bar Curl? Do you not have a limited range of motion, being seated?

no, It's Preacher Curl exercice, seated, I put my arms on a 90° angled support

Either way, drop it and add Hammer Curls or Preacher Curls.

my Biceps 1 arm Standing Dumbell was front, but I just changed it for (Hammer Curls) .. Thanks

now my Biceps routine looks like that:
Standing Z-Bar curl: 4 x 10
Preacher Z-Bar curl 90°: 3 x 10
Concentration Curl: 3 x 10
Hammer curls: 2 x 8

Modify the Tricep Routine, by doing Close-Grip and/or Skulls.

I just added the Skull Crushes. now my triceps routine looks like that:
Close-Grip (on Bench): 3 x 10
V bar Triceps push down: 3 x 10
Skull Crushes: 3 x 10
Dumbell Triceps Overhead Extention: 3 x 10

Chest needs more compounds movements. Flat Bench, Incline Bench, Decline or Dips to target chest, then finish with Flyes or Cross-overs.

I just added the Decline Bench. now my Pec routine looks like that:
Bench press 4 x 8
Dumbell Fly ending with Dumble Press 4 x 8
Bench press Incline 4 x 8
Standing cable flys: 4 x 8

You gotta have Bar Bent Rows, Deadlifts or Chins in a back workout, or it's not a Back workout!

at the moment I think I'm unable to do Chin, but I added the Barbell bent row:
now my Back routine looks like that:

Seated close-grip row (Rowing) 4 x 8
Lateral pull down 4 x 8
Upperback (spec) 4 x 8
Back chest machine 2 x max
Barbell Bent Rows 4 x 8

(Still not sure of the Back and Shoulder routine though)

my Shoulder routine looks like that:
Shoulder Dumbell Press 4 x 8
Shoulder Front Raise with cable 1 arm 4 x 8
Shoulder Lateral Raise with cable 1 arm 4 x 8
Seated or Standing Military Press 2 x 8
Reverse Flys on incline Bench (oiseau) 4 x 8