Your only way is to side hustle because what else you can do? it seems your government don't want to hear you nor anyone so might as well side hustle and stack those dollars and even bitcoin.
Any savings should be converted to deflationary asset otherwise you're risking your lifesaving to be eaten up by inflation. It's tough situation to be in but to wait for a solution isn't the way.
Frankly, that kind of thing doesn't only happen in your country. The salary increase have been falling behind for quite a while compared to inflation.
You're right, the other way to tackle inflation is having another source of income so you just don't depend on your salary or that one business that sustains you and you're family, I also think that buying food in bulk especially when they're in season is very important there are non perishables like rice,veg oil and things like that you can get them and store while the price is still affordable. And lastly buy what you can afford so you don't end up staying in debts, spend money on things that are needed.