For that, you can create a non-persistent entity with a Boolean attribute and make its association with the entity in Listview.
Now use a dataview in the listview, with the checkbox, and, use an on-click event of the Checkbox to call a microflow and if true, make its’ association with the Listview entity.
And then, this way, you can make all of them selected.
Let me know, if you face any issues
Hope it helps!