To estimate Moody's adjusted leverage trend for ERG S.p.A. in 2022, we analyze the company's Debt and EBITDA to determine the Debt/EBITDA ratio for both 2021 and 2022.

**1. EBITDA:**
We use the reported "Profit Loss From Operating Activities Before Interest Taxes Depreciation And Amortisation Expense" (EBITDA):
- **2021:** €396.68 million
- **2022:** €499.43 million
EBITDA has shown robust growth, increasing by approximately 26%.

**2. Total Debt:**
We sum the relevant short-term and long-term financial and lease liabilities for both years.
- **2021 (as of 2022-01-01):** 
  Other Noncurrent Financial Liabilities (€2,064.09M) + Noncurrent Lease Liabilities (€122.66M) + Current Financial Liabilities at Fair Value (€170.86M) + Other Current Financial Liabilities (€1,342.69M) + Current Lease Liabilities (€6.28M) + Noncurrent Financial Liabilities at Fair Value (€44.76M) 
  *Total Debt 2021* ≈ €3,751.34 million

- **2022 (as of 2023-01-01):**
  Other Noncurrent Financial Liabilities (€1,751.26M) + Noncurrent Lease Liabilities (€150.96M) + Current Financial Liabilities at Fair Value (€76.64M) + Other Current Financial Liabilities (€389.72M) + Current Lease Liabilities (€6.36M)
  *Total Debt 2022* ≈ €2,374.94 million

During 2022, ERG S.p.A. had significant cash inflows from losing control of subsidiaries (€1.26 billion) which largely funded debt reduction (indicated by a ~€1.00 billion decrease in current borrowings and ~€350 million in repayments of noncurrent borrowings). 

**3. Leverage Ratio (Debt / EBITDA):**
- **2021:** €3,751.34M / €396.68M ≈ 9.46x
- **2022:** €2,374.94M / €499.43M ≈ 4.75x

With absolute debt plunging significantly and EBITDA growing, the Debt/EBITDA multiple fell sharply from roughly 9.5x to 4.8x. A decreasing leverage metric indicates a strengthening of the company's credit profile.

<answer>Improving</answer>