Is Qualcomm safe to be on phone or is it a security threat? I have alot of stuff downloaded on my phone like com.qualcomm.qti.simsettings all starting with Qualcomm. Should these be on my phone ?? What little I did read it said security threat. Should I delete all these ??
Yes. They are completely safe to have.

In fact, they are helper programs for Qualcomm parts, for example the SoC, the modem, or another chip in the phone.

Do not try to remove or disable them - your phone will sooner or later run into random issues.