TF & CF could be useful indicators if you use them right.
Think of "Trust Flow" as the "Trust" or "Quality" of the backlinks coming in.
Citation Flow is the number of backlinks coming in.
If you have TF = 2 and CF = 30, that means you have a domain with a LOT of sh*tty backlinks. The domain was heavily spammed with crappy backlinks in the past and won't do well with SEO.
Ideally, I like to see TF > 10, even better TF > 20
TF should be +/- 20% of CF. If TF is much higher than CF, that is fine. It means you have a handful of ultra-high quality backlinks, but not a lot of them.
For parking purposes, you would want TF to be within the parameters above. If you had TF=20 CF=30, it would mean you have a lot of backlinks, most are pretty good, and could be a source of traffic.
If you had TF=40 and CF = 20, it means you have backlinks from high quality sources, like CNN, etc. Fewer backlinks with extreme trust.
You won't get click traffic (i.e., hyperlinks in a news article) from sh*tty sites, because no one reads them. They are pure search engine spam. But hyperlinks from REAL blogs / news articles / trusted sources / social media, yes, those could get traffic.
Hopefully this helps!