Most spell will work at a distance, with the exception of hoodoo or root working spells and those that are similar, which require your target to touch, ingest or be effected by something physically. However I’ve found that most spells tend to forget to mention that directing the energy of the work towards the target is where the results actually are able to form.
Just my opinion, YMMV.
That being said, based on my own words here, I am going to throw you something different to try, that essentially tackles the problem I mention. Keep in mind that I cannot make images with my mind, so any place I say imagine, I literally mean the word imagine as use your senses, use memories, use a photograph if needed, don’t get hung up on visualizing, as I literally cannot and I still garner magical results from things that require you to visualize- I just use all the other senses to imagine.