My sequence would be: establish whether this was borrower failure or an appraisal gap; refresh the sale paperwork; confirm how financing and deposit deadlines work in the local jurisdiction; then relist with a factual explanation. Rank the next offers by likelihood of completion, not price...
I would not overcorrect by stripping out normal inspection protection. Your inspection already got through, so it was not the weak link. Tighten the financing timeline instead, while leaving buyers enough time to make a serious offer. An unrealistically short deadline can produce hurried...