double sim card iphone 12

Dear Mr. or Mrs,

I have a question.

I just moved to Switzerland and I need a sim card for my time being here. But i would also like to keep my Swedish phone number for business in sweden. Therefore i want to have double sim cards.

I have a iPhone 12 and i know you can have something called esim card but i am not sure what i should have.

I just want to be able to surf, make calls and text in Switzerland but also being able to receive and make phone calls with my Swedish phone number.

Is there anything i should have in mind when getting double sim card, and also, which one should i get? A physical or esim card? And does any sim card work to put in my phone?

Many thanks in advance!