If I have left a clan, can I suggest to other players that they don’t join it?
Although that clan may have not worked out for you, it may be what other players are looking for. Focus on your new clan and make it great so that players want to join!
If you have issues with a clan that you would like to resolve, that is best done by speaking to the owner or leadership in-game. If you are unable to reach a satisfactory resolution, then it is best to agree to disagree and move on, rather than cause disruption on the forums.