Why are ETFs so unpopular in India compared to Mutual Funds or Direct Stock Investing?

I’m new to the stock market and have been looking into long-term investing in NIFTY50. From what I understand, there are three main ways to invest: 1. **Manually buying all 50 stocks** in the same proportion as NIFTY50 and rebalancing periodically. 2. **Investing in a NIFTY50 ETF**, which should be a low-cost, passive way to track the index. 3. **Investing in a NIFTY50 Index Mutual Fund**, which is similar to ETFs but operates like a traditional mutual fund. Logically, ETFs seem like the best option—low cost, automatic diversification, no active management fees. But in India, ETFs have low liquidity, tracking errors, and aren’t as widely used as index mutual funds. Why do Indian investors prefer index mutual funds over ETFs? And why do some even choose to manually buy NIFTY50 stocks instead of using these passive options? Wouldn’t ETFs be a great choice for teenagers and young investors looking for long-term, low-maintenance investing? Since I’m new to this, I’d love to hear insights from experienced investors!