For the quickest finder of a file if you know the name or part of the name.

https://www.voidtools.com/  use and install Everything.  There is nothing faster.  If you know a file has the name dogs in it and is a jpg file you'd look for dogs*.jpg  or *dogs.jpg or dogs.  You may get a ton of files but if you know the approximate date you can click on the "date modified" and sort them, or sort by size.

Second program is Agent Ransack.  It's more complicated but invaluable for finding a file when you know certain things are in it and what type it is.

For example you have an Excel file with 527.50 it can find that by searching the entire computer or you can search just the folder with Excel files.  It can search multiple drives.  It can search by a range of dates.

Both programs are free.

Using Agent Ransack requires a a little more effort initially.  I keep this reminder handy.

You can search multiple files by using regular expressions or DOS expressions. e.g.
Searching the file types .cpp, .h, .c, .INL the regular expression would be:
\.(cpp|h|c|INL)$
\.(docx|rtf)$
OR
.rtf|.docx
Yes, you can search multiple locations (folders or drives) by separating each location with a semi-colon in the Look In field, e.g.
Look In: C:\;D:\;E:\;
In the same way you can search multiple folders, e.g.
Look In: C:\Program Files;C:\Windows\system32
 
rather than *.doc it uses .doc

to separate files use | and to separate drive use ;