Hardstuck Taric Main

I am hardstuck Mastery 6. How do you get Mastery 7 on Taric because it seems damn near impossible?

I can never get and S or S+

Here are examples of my taric games:

S- 1/1/19 43 27:23 A- 4/2/13 20 27:30 S- 2/2/21 46 32:21 S- 1/0/12 31 22:22 A+ 2/4/24 42 35:39

Objectives are hard to kill because your teammates always end up destroying or killing it. I ward like a mad man. ~30 wards on avg, Im all over the map helping getting assist and by-chance kills. and I can never ever get S+ or a simple S required for mastery 7. After hundreds of Taric games I think I deserve it.

If im Lux or Morgana or any other mage like champ is easier to get Mastery 7 and prob get there in a week or 2. But with Taric, its been months.

Any Taric mains or people in general with tips of what I should do?

I was going through my match history and I got a S+ in Crystal Scar ( which doesnt count) but it was:

S+ 6/1/33 0 20:06
If thats what I need for an S+, thats fucking nuts. 6 kills low death, 30+ assists on a support taric in 20mins. wtf...