Annotatation of transposable elements / transposons / SINE sequences in human
repeatmasker is meant to annotate/mask a genome given a library of known transposable elements. From the project description, I assume you have not done any sequencing on your own. Then, instead of annotating, I think you should find already computed annotations of TEs.
The alternative to subscription-based repbase is dfam. And Just looking at their webpage they seem to have an annotation of all individual TEs in hg38. I bet my shoes there will be plenty of TE annotations in human in genome databases too.