Are washed clothes considered najis (impure) if they touch the front part of the washing machine that was touched by najis clothes before washing? And is it obligatory to wash the body of the washing machine after every use? And does impurity transfer to clothes that are touched by hand after carrying a garbage can containing impurities, and to the ironing board and the iron itself, knowing that I always have doubts about the transfer of impurity? And is the transfer of impurity only ruled when it is seen?

Obsessive doubt (waswas) has greatly afflicted you, and your only cure is to turn away from these doubts and pay them no mind until Allah Almighty grants you healing.

So, do not pay attention to any of these doubts, no matter how numerous they become. Rather, turn away from them and do not give them any thought. Do not rule a pure body as impure if it comes into contact with an impure body, even if one of them is wet or moist, as some scholars have adopted this view.

Indeed, it is permissible for one afflicted with waswas to take a concession and act upon the easiest of opinions.

Whenever you doubt the transfer of impurity from one object to another, do not pay attention to this doubt until you achieve absolute certainty, upon which you could swear, that the impurity has transferred. This clarifies the answer to both questions for you. You must not concern yourself with waswas in these two situations about which you asked, nor in others.