There are so many things you can do to make these cheap printers reliable that I really could not list them all. When it comes to bed and first layer issues here are the biggest ones

Make sure your X gantry is tight and not sagging. The eccentric nuts on the guide wheels should be set so that there is very little play. If you lift the left side it should not move much without raising the gantry.

Tram your bed with the screws almost bottomed out. Loose screws mean that the bed is moving more and will not likely hold a level for long.

The bed must be warm during abl. these things warp and twist like crazy when you heat them. You will not get good results on these cheap ass beds if your machine measures its shape cold.

If you are not using a pei coated sheet to print on buy one asap. It is a superior print surface and a huge leap in print technology. It’s less important with pei, but it is worth noting that the print surface must be clean. Oils from your fingers mess with adhesion to the print bed.

Those are the big ones. There are like I said a million little things you can do. These things can be made into reliable work horses but it takes A lot of research, work, time, and often money to make them such. My ender 3 has cost me more than a prusa would have, which is pretty dumb tbh. On the other hand, it’s mine and there is no part of it that I do not understand. I like my printer. It’s very fast, very reliable, and I made it that way.