  We study the new physics contributions to neutrinoless double beta decay
($0\nu\beta \beta$) half-life and lepton flavour violation (LFV) amplitude
within the framework of the minimal left-right symmetric model (MLRSM).
Considering all possible new physics contributions to $0\nu\beta \beta$ and
charged lepton flavour violation $\mu \rightarrow e \gamma, \mu \rightarrow 3e$
in MLRSM, we constrain the parameter space of the model from the requirement of
satisfying existing experimental bounds. Assuming the breaking scale of the
left-right symmetry to be $\mathcal{O}(1)$ TeV accessible at ongoing and near
future collider experiments, we consider the most general type I+II seesaw
mechanism for the origin of tiny neutrino masses. Choosing the relative
contribution of the type II seesaw term allows us to calculate the right handed
neutrino mass matrix as well as Dirac neutrino mass matrix as a function of the
model parameters, required for the calculation of $0\nu\beta \beta$ and LFV
amplitudes. We show that such a general type I+II seesaw structure results in
more allowed parameter space compared to individual type I or type II seesaw
cases considered in earlier works. In particular, we show that the doubly
charged scalar masses $M_{\Delta}$ are allowed to be smaller than the heaviest
right handed neutrino mass $M_N$ from the present experimental bounds in these
scenarios which is in contrast to earlier results with individual type I or
type II seesaw showing $M_{\Delta} > M_N$.
