Here is a good FAQ on block lists. Note that Pi-Hole uses lists formatted in HOSTS format.
Many of the lists recommended in the reply above are in other formats, which can cause problems.
If you open https://raw.githubusercontent.com/uBlockOrigin/uAssets/master/filters/annoyances.txt, you will see that the first three lines of the file are as follows and the format of the file is incorrect for Pi-Hole.
! Title: uBlock filters -- Annoyances
! Description: Filters optimized for uBlock Origin, to be used with Fanboy's
! and/or Adguard's "Annoyances" list(s)
This list is not in text format, it's a csv file: http://osint.bambenekconsulting.com/feeds/dga-feed-high.csv.
Recommendation - use lists that work with Pi-Hole. Wally3K lists meet this criteria.