Thanks for all your replies. I tried @Dom’s pocket trails as well as @RyanB’s trail arc but they failed to give me results. 
@Ludvig’s Melee Weapon Trail kinda worked, but it gave me weird trail renders as you can see here:
It’s definitely smoother than what I had before but you can still see the jaggedness in the trail.
So I tried Sirhaian’s suggested Better Trails, while that GREATLY improved the quality of the trail its still not as smooth as the reference:
but if this is what I have to settle for with unity being “incomplete” in a sense as @Ohadgfx mentioned then I guess I’ll take it. But part of me is dead sure that the reference gif used the built in trail renderer in unity. But I’ll have to take what I have for now.
Now another few issues I face here are:
- My trail seems to tick off instead of smoothly fading away.
- The trail only seems to work against one camera angle and disappears at the other angles?
@Sirhaian hopefully can help me with this? I’m using Better Trails?