You don't need any of those Acer Apps, perhaps Acer Quick Access if you don't see a Caps Lock pup-up anymore, then just reinstall that later again.

You can't delete apps from Windows Control Panel, what control center are you referring too? If you suspect that Acer Services or AgentSVC are still running after you already uninstalled these in Windows "Add or remove programs" (not control center) then disable the startup in Services (type services in Search) and right-click on the Acer Service or Agent and first Stop the service, then in Properties select Disable in the Startup type option.

I don't see AgentSvc in Services, just disable the startup for the 7 services (in the red box:

Also check in Library Task Scheduler for Acer tasks, Agent update maybe there, disable the task(s).

In Services you right-click on those services and select Stop, then after it stopped (or did not start), you right click again on those services an click on properties. click on Startup type and select Disabled (see red box), then click on OK at the bottom and Services will close. (I don't use Acer so I showed an Asus app in this example, you should look for Acer apps. only).

In Task Scheduler Library right-click on the Acer update or Acer Agent task and select Disable (see red box below), then click OK and the Task Scheduler will close. (I don't use Acer so I showed Asus apps in my 2 examples, you should look for Acer apps. only)

Yes, after you uninstall these apps in Add or remove programs, if these uninstall properly there should be no services or tasks left. You told me that there were no Acer programs installed only Quick Access?