Is margin calculated on each trade seperately or is it just there for all trades within a certain time period?

I'm having difficulty understanding if I can get easily margin liquidation. Let's say I trade only on 10x margin. So my max allowed loss before I get a margin call is around -10%, because

-10% x 10 = -100%

But is the 10% loss calculated on each trade separately or cumulatively? Let's say I open 6 trades and their closed profits are like this:

-2%

+5%

-5%

+3%

+1%

-5%

Total profit= -3%

So the total profit is -3%, which is more than -10%, so I don't expect to get a margin call. But my total loss is -12%.

So my question is will I get a margin call in this example or not?

My main question:

To avoid getting margin calls, should I be worried about individual trades or their cumulative loss?

Thank you.