supply and demand confusion

Hi,

I read that eur/usd goes up because more people are buying eur than selling it. But for me to get filled on my eur/usd buy, somebody must be selling eur and buying usd meaning that the number of buyers = the number of sellers?

Same with stock, price goes up as there are more buyers than sellers?

I'm not sure but think it because at each lvl buyers buy want to buy more then seller willing to sell.
So yes for each buyer there is a seller.
But I'm buying. 100 and you selling only 50 so the price goes up.

It is confusing because you don't know how the market works. More buyers than sellers means that the buy orders can't be completely filled at the current price so they must go to the next higher price for liquidity.

Ok thanks. So its not the buying and selling that determines price, but where the buy and sell orders are, and more importantly the ones that don't get filled? But Forex is a liquid market. Do do alot of the big players orders not get filled at their first price then?

Are the market makers (big banks) included in the pricing model?