If you're new to credit, having at least one card and using it responsibly can help you build a good credit history. This can be beneficial for future loans, mortgages, and even renting an apartment.
Aim for 2-3 Cards (total): Once you have a good credit history, having 2-3 cards can be beneficial. This can help you keep your credit utilization ratio low and potentially allow you to qualify for cards with better rewards programs.
More Than 3 Cards: Having more than 3 cards can be risky, especially if you struggle with managing multiple accounts or keeping track of due dates. It can also negatively impact your credit score if your credit utilization ratio gets too high.