  Here, generation of PBHs and secondary GWs from non-canonical inflation with
quartic potential have been probed. It is illustrated that, quartic potential
in non-canonical setup with a generalized power-law Lagrangian density can
source a consistent inflationary era with the latest observational data.
Besides, we show that our model satisfies the swampland criteria. At the same
time, defining a peaked function of inflaton field as non-canonical mass scale
parameter $M(\phi)$ of the Lagrangian, gives rise to slow down the inflaton in
a while. In this span, namely Ultra-Slow-Roll (USR) stage, the amplitude of the
curvature perturbations on small scales enlarges versus CMB scales. It has been
illustrated that, further to the peaked aspect of the chosen non-canonical mass
scale parameter, the amount of $\alpha$ parameter of the Lagrangian has
enlarging impact on the amplitude of the scalar perturbations. As a consequence
of adjusting three parameter Cases of this model, three Cases of PBHs in proper
mass scopes to explain LIGO-VIRGO events, microlensing events in OGLE data and
DM content in its totality, could be produced. In the end, power-law behavior
of the current density parameter of gravitational waves $\Omega_{\rm GW_0}$ in
terms of frequency has been examined. Also, the logarithmic power index as
$n=3-2/\ln(f_c/f)$ in the infrared regime is obtained.
