In the cryptocurrency market, investing can be risky, but with the right planning, it can be profitable. Here are some tips that can help you:

1. Diversification: Don’t put all your money in one currency, diversifying your portfolio across several currencies reduces risk. If you are interested in Polygon and Metis, it might be a good idea to invest in them along with some major currencies like Bitcoin and Ethereum.

2. Continuous research: Before investing in any currency, research it well. Check out the team behind it, partnerships, and use cases. Follow news and developments in the market because fluctuations directly affect it.

3. Risk management: Don’t invest money that you can’t afford to lose. The cryptocurrency market is very volatile, and currencies can rise significantly or fall quickly.

4. Follow technology and innovation: Some currencies may thrive because they offer new technical solutions, such as smart contracts or software solutions. Metis, for example, has a focus on improving scalability via Layer 2 solutions.

5. Long-term investment: Don’t expect to make big profits in a short time. Often times, long-term investing in promising currencies yields better results than day trading or scalping.