Most Adobe tools don’t have any good free alternatives even for home use.
inkscape is on a level with illustrator (maybe even better)
for drawing: try krita
if you want to pay money (much much less than for adobe): Affinity is on a level with fotoshop
[nitpick] could have written a black "シ" in front of the "sh" to keep consistency with the other katakana. Also it looks like a grinning smiley, which is also nice.