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We study the new physics contributions to neutrinoless double beta decay($0\nu\beta \beta$) half-life and lepton flavour violation (LFV) amplitudewithin the framework of the minimal left-right symmetric model (MLRSM).Considering all possible new physics contributions to $0\nu\beta \beta$ andcharged lepton flavour violation $\mu \rightarrow e \gamma, \mu \rightarrow 3e$in MLRSM, we constrain the parameter space of the model from the requirement ofsatisfying existing experimental bounds. Assuming the breaking scale of theleft-right symmetry to be $\mathcal{O}(1)$ TeV accessible at ongoing and nearfuture collider experiments, we consider the most general type I+II seesawmechanism for the origin of tiny neutrino masses. Choosing the relativecontribution of the type II seesaw term allows us to calculate the right handedneutrino mass matrix as well as Dirac neutrino mass matrix as a function of themodel parameters, required for the calculation of $0\nu\beta \beta$ and LFVamplitudes. We show that such a general type I+II seesaw structure results inmore allowed parameter space compared to individual type I or type II seesawcases considered in earlier works. In particular, we show that the doublycharged scalar masses $M_{\Delta}$ are allowed to be smaller than the heaviestright handed neutrino mass $M_N$ from the present experimental bounds in thesescenarios which is in contrast to earlier results with individual type I ortype II seesaw showing $M_{\Delta} > M_N$.

Charged Lepton Flavour Violation and Neutrinoless Double Beta Decay in Left-Right Symmetric Models with Type I+II Seesaw