When you use linear search, you might run into a few problems:

1. It Can Be Slow:

   • Linear search goes through each item one at a time. For example, if you have 100 items to check, it could take up to 100 tries to find what you're looking for.

2. It Doesn’t Always Work Well with Big Data:

   • When you have more and more data, searching can take longer. If you double the number of items, like from 100 to 200, the time it takes to search might double too.

3. It Struggles with Unordered Data:

   • Linear search is not as strong when the data isn’t sorted. Other methods, like binary search, work better when the data is in order.

In short, linear search is easy to understand, but it can be slow and not very efficient when you have a lot of items to look through.