How to read what you already have, since your four failures are informative rather than wasted.
Tunnelling, pool does not reach the glass. Wick too small for the diameter. Go up. Note that tunnelling on the first burn is often the user rather than the wick, since a first burn must be long enough to reach the edge; but tunnelling repeatedly after a proper first burn is the wick.
Drowning - the wick sinks into a deep pool and goes out. Wick too small, or the pool is getting too deep because it is burning down faster than out. Usually up a size.
Smoking and sooting. Wick too large, or too long. Trim to about five millimetres before every burn and retest before changing size: a lot of soot complaints are trimming, not wicking.
Large flame, pool over about a centimetre deep, glass too hot to hold. Too big. Go down.
So two of your four are pointing up and two are pointing down, which suggests your starting point is roughly correct and the wax or fragrance is the variable.
On changing fragrance: you do not start again. Test the new fragrance at your established wick and one size up. Two candles, not four. Most fragrances land on the same wick and the ones that do not are usually the heavy vanilla-type oils, which are the known troublemakers.