qgis - Producing smooth and consistent contour lines from SRTM

I downloaded and merged together a set of SRTM imagery. I am not sure whether it is my workflow, the actual terrain in question or if the scale of the imagery is simply too large to obtain smooth

Predicting and analyzing flood susceptibility using boosting-based

Creating Contours from DEM using QGIS — open.gis.lab

OpenDEM

QGIS Contours and Contour Labels

qgis - Removing contour artifacts from low slope regions - Geographic Information Systems Stack Exchange

OSMnx: Python for Street Networks – Geoff Boeing

dem - Fixing undesirable lines between tiles from SRTM contour

DEM to Contour using QGIS

Quality Assessment of Digital Elevation Models in a Treeless High-Mountainous…