All my life I have been using the toilet block incorrectly: I have been hanging it on the edge, but it needs to be done differently.

Take any block you usually use.

Insert the clips into the rim. It takes a lot of effort.

Now see how comfortable it is.

After handling, the block holds perfectly and does not disturb. You can move it in any direction. A few days on one side, a few days on the other and under the edge it never gets dirty

Did you succeed?