Why did the Pennsylvania POTUS vote tallies vary so much?

On 11/15 I posted on my Facebook about a discrepancy in the Pennsylvania vote totals for POTUS, wherein 19,958 votes were deducted from Trump's votes, while 19,958 votes were simultaneously added to Biden's votes.

I was directed to a FactCheck article that described that nearly 20K vote swap as simply a human error, and that it was corrected about an hour later. (Note: My subsequent review does not appear to support a "correction".)

The next day I posted on my Facebook about an eerily similar situation that occurred in the KY Governor's race in 2019. In that case, while 560 votes were removed from the Republican contender, 560 votes were simultaneously added to the Democratic contender's vote total.

If you listen to Retired Army Col. Phil Waldron explain about how the Dominion Voting System is connected to the internet and able to be manipulated, you may, like me, even more seriously question the security and accuracy of our voting systems.

See...

"AZ Hearing Highlights: Dominion Connected to web, Data Points to Fraud, Forensic Exam Can Find Out."
published on Dec 1, 2020 on "Zooming In with Simone Gao" YouTube channel
https://youtu.be/PV5qpn4zE6o

I decided to re-examine my YouTube TV DVR'd copy of CNN's election night coverage, and came across some very odd vote tally discrepancies for the POTUS race in Pennsylvania that occurred that evening,.

Here are the six anomalies of Pennsylvania POTUS vote tallies oddly changing at various times, as observed on CNN.
Note: The YouTube videos offers better fidelity.

Ex1of6
From ~9:12 to ~9:15 PM EST
Trump's votes DECREASE by 33,941
Biden's votes DECREASE by 193,301
https://06927bd2-a-62cb3a1a-s-sites.googlegroups.com/site/thomasglusch/file-cabinet/Ex1of6%20PA%20Vote%20Fluctuation%20CNN%200915PM.jpg
YouTube URL: https://youtu.be/XRYBYCCwRCY
BitChute URL: https://www.bitchute.com/video/eE7wqjuAGMLt/

Ex2of6
From ~9:16 to ~9:17 PM EST
Trump's votes DECREASE by 113,870
Biden's votes increase by 17,372
https://06927bd2-a-62cb3a1a-s-sites.googlegroups.com/site/thomasglusch/file-cabinet/Ex2of6%20PA%20Vote%20Fluctuation%20CNN%200917PM.jpg
YouTube URL: https://youtu.be/dtbLiXTxL_0
BitChute URL: https://www.bitchute.com/video/OW8DiUIaFCGz/

Ex3of6
From ~9:22 to ~9:25 PM EST
Trump's votes DECREASE by 120,494
Biden's votes DECREASE by 384,900
https://06927bd2-a-62cb3a1a-s-sites.googlegroups.com/site/thomasglusch/file-cabinet/Ex3of6%20PA%20Vote%20Fluctuation%20CNN%200925PM.jpg
YouTube URL: https://youtu.be/VBCYvx6JcDw
BitChute URL: https://www.bitchute.com/video/DeN1IbLNtfcF/

Ex4of6
From ~11:08 to ~11:09 PM EST
Trump's votes DECREASE by 19,958
Biden's votes increase by 19,958
https://06927bd2-a-62cb3a1a-s-sites.googlegroups.com/site/thomasglusch/file-cabinet/Ex4of6%20PA%20Vote%20Fluctuation%20CNN%201108PM.jpg
YouTube URL: https://youtu.be/xy-EsZBhN_c
BitChute URL: https://www.bitchute.com/video/fCrYGMdsdkCG/

Ex5of6
From ~12:08 to ~12:09 AM EST
Trump's votes DECREASE by 29
Biden's votes increase by 5,267
(this fixed the 11:09 PM vote swap????)
https://06927bd2-a-62cb3a1a-s-sites.googlegroups.com/site/thomasglusch/file-cabinet/Ex5of6%20PA%20Vote%20Fluctuation%20CNN%201209AM.jpg
YouTube URL: https://youtu.be/OVi33FtTQJs
BitChute URL: https://www.bitchute.com/video/78UjLdY5LOJT/

Ex6of6
From ~2:03 to ~2:04 AM EST
Trump's votes DECREASE by 666
Biden's votes DECREASE by 312
https://06927bd2-a-62cb3a1a-s-sites.googlegroups.com/site/thomasglusch/file-cabinet/Ex6of6%20PA%20Vote%20Fluctuation%20CNN%200204AM.jpg
YouTube URL: https://youtu.be/_Z0rdK8xa-Q
BitChute URL: https://www.bitchute.com/video/vmxawyZllkwy/