... My experience till date has taught me that whether long term investment or short term trading Bitcoin is the best. Where our assets are the most secure, even if their value falls, we do not worry about our assets.
Where OP's mistake lies in not choosing Bitcoin. If I'm wrong about what the OP meant, I'd say that he didn't explain what coins he was losing money on.
Long term investments have more benefits than short term investments. I don't recommend people to trade on Bitcoin, but I rather recommend people to invest in Bitcoin.
Long-term investors can make any decision according to their wishes. But waiting until it reaches the highest price is a good decision for long-term holders. Different from those who choose short term.