Find and findstr work, but strings appears to be looking for a file name.
C:\Temp>type cmdLogs.txt | find "Apps"
11/04/2021 06:10 PM <DIR> Apps
C:\Temp>type cmdLogs.txt | findstr "Apps"
11/04/2021 06:10 PM <DIR> Apps
C:\Temp>type cmdLogs.txt | strings "Apps"
Strings v2.53 - Search for ANSI and Unicode strings in binary images.
Copyright (C) 1999-2016 Mark Russinovich
Sysinternals - www.sysinternals.com
No matching files were found.
Note the last sentence.
C:\Temp>find /?
Searches for a text string in a file or files.
FIND [/V] [/C] [/N] [/I] [/OFF[LINE]] "string" [[drive:][path]filename[ ...]]
/V Displays all lines NOT containing the specified string.
/C Displays only the count of lines containing the string.
/N Displays line numbers with the displayed lines.
/I Ignores the case of characters when searching for the string.
/OFF[LINE] Do not skip files with offline attribute set.
"string" Specifies the text string to find.
[drive:][path]filename
Specifies a file or files to search.
If a path is not specified, FIND searches the text typed at the prompt
or piped from another command.
Depending on what you are trying to do, Powershell's Select-String might be an alternative.