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The primary objective of this work is to study the dynamical characteristicsof an anisotropic compact star model with spherical symmetry. Thisinvestigation is conducted in the framework of $f(Q)$ modified gravity. Tosimplify the calculations, we employ the Karmarkar condition and derive adifferential equation that establishes a relationship between two crucialcomponents of the spacetime namely $e^\nu$ and $e^\lambda$. Additionally, weincorporate the well-known Finch-Skea structure as the component representing$g_{rr}$ and subsequently find the resulting form of the component $g_{tt}$from the relation of metric functions to formulate the precise solutions forthe stellar structure. To assess the behavior of the anisotropic fluid andstability of the compact star, we use the observed values of mass and radiusfor the compact star model $PSR J0437-4715$. The graphical analysis depictsthat the stellar structure possesses physical viability and exhibits intriguingproperties. Furthermore, we predicted the mass-radius relation along with themaximum mass limit of several objects for different parameter values byassuming two different surface densities. It is discovered that the compactnessrises when density increases.

Study on physical properties and maximum mass limit of Finch-Skea anisotropic model under Karmarkar condition in $f(Q)$-gravity