The Internet is awash with images of the Moon taken by amateurs with varying experience, and just about every kind of equipment imaginable.
If you can find a way to hone your imaging and processing technique, the quality of your output can be quite surprising.
These lunar images were taken with my 3.5" Questar Maksutov Cassegrain telescope and lowly iPhone SE camera. The difference in magnification is due to different eyepieces.
The large crater in the center of the second image is Copernicus, 58 miles in diameter. The smallest craters in the image are about 1 mile in diameter.
Yes, the Questar is pricey, but I am pretty sure I could have done about as well with a 5" or 6" Schmidt Cassegrain, given the same local seeing.
Seeing is very important if you want to get the best out of your gear, and of course, perfect focus is equally important.
Do not be too quick to fault your gear. Technique covers a litany of sins. GLTA !!!
Edited by LorenBall, 24 February 2021 - 02:08 PM.