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This manuscript is based on an investigation of bouncing cosmology in a 4DEinstein Gauss-Bonnet gravity. Various bouncing models such as symmetricbounce, matter bounce, super bounce, and oscillatory bounce have been examined.Expressions for energy density, pressure, equation of state parameter have beenderived in the most general manner and then reduced to 4D Einstein Gauss-Bonnetgravity for isotropic, homogenous, FLRW cosmos. Physical interpretation ofHubble and deceleration parameters has also been discussed and plotted for eachmodel from non-vanishing scale factors. Non-singular bouncing models indulge inaccelerating late-time cosmic acceleration phenomenon. It has been analysedthat the Gauss-Bonnet coupling parameter has a lesser contribution to thedynamics of modified gravity while the bouncing parameter has noticeableeffects. We have examined various energy conditions and witnessed the violationof strong and null energy conditions in bouncing models. Analytical expressionsfor jerk and snap parameters have also been calculated in terms of cosmic timeand redshift. We have explored bouncing models through specific cosmographictests to check their validity. Also, through stability analysis, matter bouncebecomes the most stable model by increasing the value of the bouncingparameter. To find best-fit values, bouncing models have been constrained withHubble data set and $\Lambda$CDM. We have calculated the values of parametersby applying the least-square fitting method. To make this analysis quantified,we have employed reduced chi-squared method on $H(z)$ data sets for each model.

Bouncing behaviours in four dimensional Einstein Gauss-Bonnet gravity with Cosmography and Observational constraints