You could compress the kick, divide it into 2 parts: a bottom and a top kick and work on each differently (nothing essential but a lot of people prefer it that way), you could even choose 2 different kicks and make them bottom/top kick, and layer other sounds with it (for example a hihat or something else), you could use a transient designer and boost the clicky attack of the kick, using EQ correctly can really make or brake a kick, you could saturate the kick... etc. There are a lot of things that can improve (or destroy if abused) a kick sound.
Sidechaining the kick can really help the kick cut through the mix and create a nice ducking effect, but it won't help fixing a crappy sounding kick.
There are no secrets, just tools and common methods. It is all about listening and experimenting until it sounds good to you.