I cannot get my photo sized right for an icon

So while im sure this is a very easy thing to do I have been messing around with this for what seems like entirely too long. I’m trying to size a logo correctly so it can match all my other icons that come in the various APKs. No matter what I do it is always noticeably blurry. I’ve read so many different things and have tried them all and I still can’t get it Atleast good enough where it won’t bother me. I don’t really want to show a photo of it as I am not sure how the rules are with that and I don’t want it to seem like I’m advertising anything, but if somebody would be willing to put me in the right direction or even they could just do it because I know how easy it is for someone who does this on the regular. It would be greatly appreciated even if you just tell me what I did wrong so I can learn from it would be amazing, so I never have to deal with this again. 🤣my