Flavor physics offers many opportunities to probe the fundamental nature of matter and their interactions. The standard model (SM) of particle physics has a very unique flavor structure which is being tested by precision measurements at flavor experiments. Deviations from the SM predictions can point to new flavor structures and new states which can offer clues to the various flavor puzzles in the standard model. Motivated by recent results and flavor anomalies, we will focus on various processes that can reveal possible extension of the SM with new states such as leptoquarks, diquarks, sterile neutrino and dark sectors.