Why does my connection die while I'm using Zoom?

[KeepAustinWired]

My internet connection (wifi) breaks several times per day, only when I'm on Zoom. I can't understand why. is it a problem with my internet speed and I need a better package? Is it a problem with the modem/router not being able to handle Zoom meetings over wifi? It's hugely disruptive to my work as I'm working 100% remote and am on Zoom for several hours per day. I'm on a Motorola MG7315.

How can I resolve this? I'm willing to spend money, but I don't know where to spend it! New wifi router? New modem? 

Fri Jul 24 13:37:28 2020	Critical (3)	No UCDs Received - Timeout;;CM-MAC=00:40:36:5c:d7:68;CMTS-MA...
Fri Jul 24 13:37:47 2020	Critical (3)	No UCDs Received - Timeout;;CM-MAC=00:40:36:5c:d7:68;CMTS-MA...
Fri Jul 24 13:38:06 2020	Critical (3)	No UCDs Received - Timeout;;CM-MAC=00:40:36:5c:d7:68;CMTS-MA...
Fri Jul 24 13:39:00 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/...
Fri Jul 24 13:39:09 2020	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=00:40:36:5...
Fri Jul 24 13:39:33 2020	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=00:40:36:5...
Mon Jul 27 13:46:27 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/...
Mon Jul 27 13:47:14 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/...
Mon Jul 27 13:47:14 2020	Critical (3)	Received Response to Broadcast Maintenance Request, But no U...
Mon Jul 27 13:47:18 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/...
Mon Jul 27 13:47:18 2020	Critical (3)	Received Response to Broadcast Maintenance Request, But no U...
Time Not Established	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/...
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=00:40:36:5...
Tue Jul 28 17:18:30 2020	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=00:40:36:5...
Tue Jul 28 19:56:10 2020	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=00:40:36:5...
Wed Jul 29 11:04:41 2020	Critical (3)	Resetting the cable modem due to docsDevResetNow
Wed Jul 29 11:16:21 2020	Critical (3)	Resetting the cable modem due to docsDevResetNow
Wed Jul 29 11:18:36 2020	Critical (3)	Resetting the cable modem due to docsDevResetNow
Wed Jul 29 11:55:12 2020	Critical (3)	Resetting the cable modem due to docsDevResetNow
Thu Jul 30 09:05:53 2020	Critical (3)	Started Unicast Maintenance Ranging - No Response received -...
Thu Jul 30 09:06:01 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/...
Thu Jul 30 09:06:46 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/...
Thu Jul 30 09:06:46 2020	Critical (3)	Received Response to Broadcast Maintenance Request, But no U...
Thu Jul 30 09:06:49 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/...
Thu Jul 30 09:06:49 2020	Critical (3)	Received Response to Broadcast Maintenance Request, But no U...
Thu Jul 30 09:06:54 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/...
Thu Jul 30 09:06:54 2020	Critical (3)	Received Response to Broadcast Maintenance Request, But no U...
Thu Jul 30 09:06:59 2020	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/...
Thu Jul 30 09:06:59 2020	Critical (3)	Received Response to Broadcast Maintenance Request, But no U...
Time Not Established	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/...
Fri Jul 31 08:35:12 2020	Critical (3)	Resetting the cable modem due to docsDevResetNow
Time Not Established	Notice (6)	Honoring MDD; IP provisioning mode = IPv6