The current Large Hadron Collider (LHC) data does not yet show any clear indication of new physics and only incremental improvements are anticipated in the foreseeable future. However, while the main focus of the LHC has been on constraining TeV scale physics, new physics could be hiding below the electroweak scale. We consider a light axion-like particle (ALP), which could be a mediator for dark matter. If such an ALP is produced (resonantly) at the LHC it is expected to decay dominantly into the $b\bar{b}$ final state, provided its mass is $\mathcal{O}(10-100)$ GeV. A measurement of this kind of signature is challenging due to trigger requirements at the LHC. We discuss probing these light resonances in $b\bar{b}$ final state using jet substructure techniques. We will also demonstrate strategies to improve the sensitivity by modifying trigger requirements at the LHC.