There are couple of reason
- You did not prioritize your team
- You build wrong item
- You took the wrong decision
You did not prioritize your team
Your mid struggle to keep their farm. Enemy’s team put a lot of pressure to your mid and this lead to two things.
1). They ask for gank (the most usual thing)
2). They ask for support to stack. The later one is much easier than the first one especially if enemy safelane and offlane didn’t play well(considering enemy support are focusing on your mid which leave your offlane to get so much xp and probably last hit. If your mid still able to last hit and not dying too often, he can comeback properly by taking the stacks
Most of the times, stacks either go to wrong people at the wrong time. Enemy probably will try to take the stacks if possible. Other heroes that didn’t require gold at that moment take the stacks and slow down the key item on key heroes. For example, I need 900g for mekansm but for some reason position 4 necro takes it because he was so poor and need gold for getting his item. In this situation, a proper team will need to communicate what item he needs to complete and how far he is from that. If you realize that teamfight is going to start real soon, item like mekansm is far more superior than eul or any standard item, so prioritize properly for those who really needs it.
Build wrong item
Have you seen naked midas NP with gloves of haste as 1st item or Doom rushing midas then aghs? Your item choice reflect your game knowledge. Usually people who jungling will have less information on the item progression on enemy heroes (Idk what they do in their jungle and why are they so focused on it honestly) so when they thought they are ahead in terms of gold and lvl, they thought they can just go yolo facetank enemies.
Let’s clear the misperception here. When it comes to choose your item, make sure that it align with your team objective and your heroes. You play three cores, none of them able to hold the enemy push. You better be ready to fight earlier with cheaper item but effective such as drum, aquila, mek. If you waiting for your big item, enemy might already knock your T3 tower and none of you can hold that push because you don’t have your big item. Always make sure that your team have urn, arcane boots, pipe or mek to sustain the push. You also need to know the peak time of those items. Mek should have been completed as fast as you can, probably the latest will be around min 20. You should have urn by min 7 or 10. People underestimate the power of urn of early game. I did it too back then, I never bought urn but I realize the healing power and the DoT is just too good in the early game where most heroes still really weak and that 140 damage is making a big difference.
Wrong decision making
You think you can one shot enemy support but instead they stun you first, enemy supports stay alive and crucial spell such as grave or fissure are out and your team suddenly in bad position. Cores dead without buyback and enemy decide to go straight throne. This is one of those moment that I think is really difficult to justify who is wrong and we cannot control this one due to the difference perception and knowledge of each player while at the same time we need to take quick decision and execute it at the same time.
One may think that it was a really good opportunity to bait and get 4 or 5 echo slam, or RP or vacuum into wall and curse but when it fails the blame is everywhere and I think everyone should take the credit for it especially when you see the replay that someone probably lagging behind, not in the right position, cast a wrong spell at wrong time, it is really dificcult to control this in pub environment.
It is better to always see where your teammate is, where was the last time enemy spotted, is everyone have their ult ready? is everyone already completed their last expensive item?, knowing the buyback status and gold required if shits happen. I remember in one of the fight that Tide in our team has no ult and our PA start YOLO’ing to the enemy team. By the time PA’s BKB expired, she just got destroyed instantly and we cannot save her. PA thought Tide has ult (see the fucking green button is not shining) and this misperception cost you the game.