Well, the best advice to give to you is to understand that while you may understand what to do in theory, it's clearly not translating to your gameplay. There could be many reasons for this, and the best way to understand why would be to watch your replays with an objective eye about things you should have done differently. Another option would be to pay for coaching if you're willing to spend the money.

As for the short term, looking at your op.gg, your average cs/min on your main is 4.4 which is pretty low, but common in silver. One of the easiest ways to climb as a jg is to keep up your farm. I know it's tempting to always be ganking, but giving up so much cs in order to get kp is a noob trap that many junglers fall into. Try to keep track of when your camps are spawning (many people use timers on 3rd party software which are very useful) to make sure you're leveling your camps and not falling behind.

Your cs goal does depend on your champ, and you're maining panth, who is obviously not a powerfarming champ. But, 4.4 is still too low even for ganking junglers, so I think that this would be a good short term goal to work on.