Also the higher salary dont mean prices can go up without reason
Nope. It seems that you don't know how inflation works. If the salaries get increased 10 times, the prices will increase 10 times as well.
Salaries are a major part of the production costs and increasing them increases the prices of all products.
More consumption isn't necessarily better for the economy, because a big part of the products on the national consumer market are imported.
Lowering the taxes for the companies would simply increase the budget deficits, which means more government debt. The countries in the EU already have big budget deficits.
If it was so easy to make the minimum salary 10K euro/dollars/British pounds, the governments would have done it decades ago.