Are you still using the original HDD it came with, or did you change it? I have an old All-in-one, 2012 Celeron with 2GB RAM which was supposed to be my nephew’s first computer, I installed Xubuntu 18 on it, everything works fine, even some online video watching, but dear lord the R/W speeds are atrociously low, which makes starting up any program a small test of patience.
Meanwhile, bugs that look like absolute freaks and stand out in the middle of foliage are just laughing