I live in Spain as well and Spanish banks should worry everyone who lives here. But currently I think the biggest worry is how the Spanish government will fund the Corona crises, we will see a massive drop in taxes, high unemployment - the cost will sky rocket and the government income crash. It is very lightly that Spain will be forced to do as Cyprus did after the financial crises, they will take money from peoples accounts to try and balance their budgets (Cyprus used this to save their banking sector). It is a fair model, the poor guy have no money in the bank and pay nothing, the rich guy will have some money and make his contribution. This could well happen all over Europe. It would be madness of course, but I dont see any other way for Spain. I am certain Spanish politicians have zero money in their Spanish bank accounts.
A good place to bank is probably Scandinavia. But it will be very difficult to get a bank account there for a Spanish company. So you might have to setup a Swedish or Norwegian company. Sweden haven't closed down the country so their finances are not badly effected from Corona. Norway is partly closed down but they have more than enough money to save their banks.
You should also consider holding gold. It is considered safe and might go up a lot in value over the next 6 to 12 months.