Zip ties are the answer
I’ve stopped using luggage locks and now favor plastic zip ties for my checked bags. They do the same job as locks and, as an added bonus, they’re much cheaper and easier to replace if the TSA decides to open my luggage.
In reality, traditional suitcase locks are merely for show and can be opened by anyone with a few moments and the correct keys (or even a paperclip). At least the zip ties must be physically cut and then replaced by anyone who may want to remove or place items in my luggage. Now I’m just trying to find the ties in unusual colors….