The way how this forum works, filter is very different from search but I understand what you meant.
However we do not have the capacity to allow user to search as a function - meaning what you ask is to allow user to exclude "tags" - which means to trigger a search every time they use the forum. I'll need to figure out how to do it more efficiently.
I will not make any promise, as we have an extremely limited operational budget comparable to our size and scales.
For now, please use the search function as you desire.