Is including references of journals with low or no reputation considered bad practice?
If you use insights from a publication, you must cite that publication, no matter how low the regard in which you or others hold the venue.
If you're nervous that there's a high risk the insights will be wrong, there are things you can do to reduce that risk:

seek out an independent corroborating source for the same insight (and cite it in addition to the &quot;low quality&quot; source);
check the chain of logic from evidence to conclusions in the &quot;low quality&quot; source step-by-step for yourself (and still cite the source);
if it can be done ethically and affordably, repeat a few of the experiments (if any) reported in the &quot;low quality&quot; source to see if the results are reproducible (and still cite the source).