Things that hapen in my mind

Often when I am staying idle or doing something an urge or instinct comes to me urging me to think about bad things .I think about the destructions in the middle east and of the past in Europe. Bad things because there is an urge of curiosity. How would the ugliest blasphemy look like. Often I end up imagining blasphemous things like paraphilia and phallic god( Blasphemy or idolatory with sexual content where god is insulted with sexual things) My first question is: Is this case called intentionally or deliberately bringing blasphemous thoughts to mind and thus nullifies my islam or it is called thinking? And thinking is like passing thoughts and waswas and thus not held accountable or no sin on me? What would make them sinful? Is it the intention(deeds are judged by intention) like if you bring them to mind for attaining pleasure would you nullify your islam or commit major kufr? The second question is: My mind often plays like a tape recorder all kinds of things I have heard ,seen or felt and even invents sounds, images and actions. Example: It plays an image, sound and feeling as if i am hitting god with my arms and I feel the feeling that is produced by hitting god with your arms. It plays a sound as if I am insulting god with bad words and I feel the unique sound of those bad words. It plays an action as if I am hitting god with my genital organ and a feeling is produced as a result of this that is felt by my genital organ and other parts of the body. Second question : Is this case called intentionally or deliberately bringing blasphemous thoughts to mind and thus nullifies my islam or it is called thinking? And thinking is like passing thoughts and waswas and thus not held accountable or no sin on me? What would make them sinful? Is it the intention(deeds are judged by intention) like if you bring them to mind for attaining pleasure would you nullify your islam or commit major kufr?