Thanks! the "find tf_dingaling_pitch" command worked to find the default pitch for me too! it says:

max. 255.000000"tf_dingaling_pitchmindmg" = "114.339996"
( def. "100" ) client min. 1.000000 archive
max. 255.000000 - Desired pitch of the hit sound when a minimal damage hit (<= 10 health) is done.

"tf_dingaling_pitchmaxdmg" = "114.339996" client ( def. "100" ) archive min. 1.000000
- Desired pitch of the hit sound when a maximum damage hit (>= 150 health) is done.
"tf_dingaling_pitch_override" = "-1"
client
- If set, pitch for all hit sounds.

I underlined and bolded the default, ONLY underlined the currently set pitch, and ONLY bolded the "damage dealt" parts.

THANK YOU SO MUCH TROG FOR THE COMMAND! YOU REALLY HELPED ME OUT TOO!

(P.S. The "<= 10 health" means "More than 10 health" for when that pitch is used, and ">= 150 health" means the opposite, "Less than 150 health" for when the pitch is used, just for those out there who don't understand what those mean.)

(P.P.S. I then used "tf_dingaling_pitchmaxdmg 100" and "tf_dingaling_pitchmindmg 100" to reset my pitches back to default.)