PSA: Remember to Pressure Other Lanes.
If you are desperate to get mmid, you will only hinder yourself. There is more to the Summoner's Rift than just mid lane.
Included there are minions, towers, and little paths that could potentially turn fights in your favor.
So please learn to pressure more than just mid.
When unable to break a siege, don't force it, especially in low elo, cause well, people really suck.
So you go bot or top. You can 4 man or 5 man shove a lane and its tower.
This way you get gold from towers, gold from cs, make minions push enemy lanes, and get drags and stuff. Even steal enemy jg income. All in the effort to extend your lead. Then you back if low hp and repeat.
I'm tired of seeing people force mid. Which then leads me to the tip of when inhib is down, PUSH OTHER LANES. If inhib and inhib towers up, try to pressure other lanes, or TAKE AN OBJECTIVE.
This way you always get something from a stalemate if even, or if ahead but enemy is entrenched you then extend your lead and look for cracks in the enemies entrenched position.
I'm tired of losing extended leads, or seeing the enemy cling onto hope, when allies are too newbish enough to get such a very, very simple concept and tactic.
You will overall save your self some effort. This way you bleed their hope and they can surrender more easily.
So please learn to play more effectively.