I have a feeling you're using 5s charts to try and get better entries so you can keep using small stops out of loss averse behavior
I think this sounds quite accurate. A better entry, closer to the level I'm watching is I think not a bad thing. An aversion to loss is also not a bad thing I think (fear of loss is of course bad, but avoiding or lessening losses in general is not a bad thing). I'm always trying to look at what the 1 minute chart is telling me, it is right there as well in plain view, but the 5 sec does allow me to perhaps see something forming sooner.
I'm sorry I don't know much about candles to be able to comment, and have never really studied them, especially in relation to the wick and body. I do see that some people draw their trendlines along the bodies and don't include the wick, but I'm not sure if this works for me. The only reason why there is a wick after all is just because that 1 minute time segment captured price hitting a low and coming back up. If you shift the time scale over a few seconds, maybe that candle would be all body and no wick since price would have "exited" the candle on the low, just before price went back up. This of course doesn't matter much I don't think, and I certainly don't want to get into candle patterns, but just focus on the fact that price hit a low point and rose higher.
On a 5 sec chart, this would be even more obvious, and I could see how long price hung around the low, or perhaps it shot straight up much faster. I do agree though that sometimes I'm sucked into micro price action that I should be doing nothing about on the 5 sec chart.
Your suggestions about expecting reactions and tests is for sure something to focus on, and something I'm not too good at. If my entry is such that the test would mean price goes against me 2 or 3 points, this is a huge problem because if the test of support fails to hold, this trade is now a much bigger loss (ie. first I have to let it go against me 3 point to test support, and then if it drops some more, it costs me at least another point or more to get out). So the idea is that if I'm expecting support, I use the 5 sec chart to get in as close as possible to the support level, and if price should happen to test again, this should be within my stop.