Jisti needs no setup, just create a room and you're good to go.
Share URL and password to
Example:
h t t p s : / / m e e t . j i t . s i / S a t u r d a y _ A l i b r e C A D _ S w e d e n
Password: 2024
or
RustDesk if you want it more directly, however, requires a download of the programme which can be run without installation or you install the programme.
h t t p s : / / r u s t d e s k . c o m /