Axial are the easiest. Your solder temp was probably too high. If too high it can actually make soldering difficult. Also the solder you are using has rosin in it based on how it looks. I used rosin free without issue. Also consider priming each side with fresh solder. So for an axial I solder coast the long leads. When heated up to solder, it takes only a second. I do the same for surface stuff too actually.