A wood stove is easy to clean, leave a little bed of ash before lighting. Doing this, I only empty the ashpan every three days. The glass will get black unless burning in the efficient zone. I have a thermometer stuck via a magnet to the flue. The glass on mine is quite black today but it will burn off later, when I use the airwash control. Only cleans if the stove is in that zone
If burning ovals, I have a multi fuel stove, I clean out the grate thoroughly, just riddling and I make sure it is absolutely stone cold before using my henry vac, which is lurking behind my sofa. The bag inside is a very good filter
The ash from ovals is very different to wood ash and I use my ash caddy to keep that ash safe, they need to be binned, not sprinkled on the garden. I have bought a small galvanised bin with a lid, kept in a shelter, to collect that ash before bagging outside
If there are too many annoying cinders, then you have not had a complete burn. Use the poker, poke through what you can, then use the bigger cinders for your next fire. Maybe try and use full throttle on both air inlets, just before the fire goes out