Pick up a cheap hammer drill and put it directly in the brick. just use the right screws to mount it, and never worry about it again. No need to spread the load.

https://www.amazon.com/Tapcon-Concrete-Anchor-3171407V2-Included/dp/B0963ZZFPX/ref=asc_df_B0963ZZFPX?tag=bngsmtphsnus-20&linkCode=df0&hvadid=80470627402003&hvnetw=s&hvqmt=e&hvbmt=be&hvdev=m&hvlocint=&hvlocphy=&hvtargid=pla-4584070158538395&psc=1