I guess you mean you have fatty liver and liver steatosis—and they are the same. It is not serious and it is curable, but it takes time and patience and a strong will.
Treatment:
Lose weight. This is one of the best treatments for NAFLD. Weight loss helps reduce fat, inflammation, and scarring in your liver. Losing just 3% to 5% of your body weight can cut down on how much fat is in your liver.
Exercise more. Try to be active at least 30 minutes a day most days of the week. If you're trying to lose weight, you might find that it helps to exercise more. But if you don't already exercise regularly, get your doctor's OK first and start slowly.
Be kind to your liver. Don’t do things that will make it work harder. Skip alcohol. Take medications and over-the-counter drugs only as instructed. Talk to your doctor before you try any herbal remedies. Just because a product is natural, that doesn’t mean it’s safe.
Get your cholesterol down. Eat a healthy plant-based diet, exercise, and take your medications. This will get and keep your cholesterol and your triglyceride levels where they need to be
Manage your diabetes. Check your blood sugar, and take medications as your doctor prescribes.