Typing in the search box is one way to narrow a large group of files to a more manageable one, but it's not the only way. Filters are an even easier way to point and click your way to search success.
Start in the folder or library you want to search, and then use the button in the lower right corner of a File Explorer window to switch to 'Details' view, which arranges your files into columns. Now look to the right of each heading, where you'll find a small arrow. Click that arrow to show a filter list for the data in that column. By clicking a checkbox or two, you can cut a very large list of files down to size.
The date navigator is much more powerful than it looks at first glance. Use the calendar to zoom in or out and narrow or expand your view of the contents of a folder or a search. Initially, the calendar shows the current month, with today's date highlighted. Click the month heading to zoom out to a display showing the current year as a heading with the current month highlighted. You can then drag or hold down Ctrl and click to select multiple months.