Displaying Database Tags in a Repeater

Hi, hoping somebody can help me. I am trying to add a code so that clicking on tags in my #selectedTags1 box will filter which elements are displayed in a repeater (#repeater1) on the right side of the screen. The repeater is connected to a data set with a Tag-column that matches the value of the tags in the selectedTags1 box.

tags are titled:
brost
ansikte

How do I go about to code this???