Invasion is not made for solo players in mind... Why?

I know other threads have mentioned this, but even the quests are obviously focused on pre mades.

This really sucks, because this is by far the coolest fun mode so far. Weeboo, anime orgasm aside, the PvE is really fun. But... impossible nearly in solo...

Out of like 40 attempts, I've won twice. Both times were me playing as Poppy and using my BS OP build that gets me like 2 HP bars, GA, and insane sustain, and hard carrying them like nobodies business, which I only accomplished twice, despite that completely broken build.

All other times were mega losses, with only a few where the other players were exceptionally good, very good. Even so to the point that we had S+ ratings on all of them up to the boss, yet we still wiped at the boss (Albeit the boss lived with 32hp), and that was the closest I got without a poppy.

Took a full team of solo players who were exceptionally well skilled strategically and mechnically to ALMOST win the mode....

The pure insane difficulty of the mode tells me Riot had only people in pre mades truly in mind, and who were communicating via voice to accomplish this...