Really ? You call that proper maintenance ?
battery and tyres have to be replaced whatsovever. They are wear and tear items. Same goes for the suspension bushings, ends etc.
The oil you were using was not recommended for this engine. It was too thick.
Every 2-3 days you check all the fluids if they are on their level. Apart from doing that you also have to change them after specific running.
Washing and waxing has nothing to do with mechanical maintenance.
You have been running the car on salty tap water. That ****** up your cooling system. And you are saying that proper maintenance ?
Seems like you still have the mentality of most of pakistanis "Chalti ka naam gaari". Being a pakwheeler you are not supposed to think that way. You are supposed to learn from here. We have many marvelous members here who teach us proper way to maintain our cars. The waste their precious time visiting and writing here for us. There are discussions about every aspect of car. There are DIY's so that you can understand how to do it. There are reviews of what products to use.
What is the usefulness of that knowledge if you don't avail it and apply it. You disappoint me brother. You are supposed to be better than this being a pakwheeler.