Can you use the dual sim with 2 different carriers (ie my personal phone is ATT and my work is Verizon)

Yes you ABSOLUTELY CAN use a single device w/ 2x carriers … as long as the device is NOT carrier locked to a single carrier.

See more detail here:

Using Dual SIM with an eSIM - Apple Support

This is a user forum, you are not addressing apple here just fellow users

but i believe the cause of dual sim is for people who travel to other countries I would assume as much

Deleted dupe.