Riots and lack of iron (IXION)

There are two problems in the game:
1. Lack of iron, because the ship spends an unmeasured amount of them on repairs. And if you consider that the ship breaks down faster and faster, the further you go through the plot, then generally an ass. In addition, in systems, you try to invest to the maximum in planetary infrastructure when colonizing or studying anomalies. After all, since the game gives you the opportunity to get the max. benefit from investments, then mining should allow the right amount of iron in the system.
2. The colonists are degenerates. If you collect as many cryocapsules as possible and don't defrost them all, people start to freak out. Apparently, leaving them to rot in space is a much better choice for them than defrosting them over time. Because of this, their mood is greatly reduced.
PS It also infuriates that they do not like it when you are in the same system for a long time. We are trying to survive and we need to get everything to the maximum, there is nowhere else to live, except for the ship. But these stupid people think otherwise. And I don't even want to talk about the transfer of human and land resources between sectors. Everything is bad there. I was also pleased by the inhabitants who do not know how to do anything and cannot be taught. Downy parasites on vacation.
How to solve the problem of iron and the mood of the inhabitants? Is there such a balance in the game that you need to study, colonize "in a slipshod manner" and leave half of the cryocapsules in space?