A good future contract to trade? Well, they are all good, if they are liquid.
As for the fundamentals of CL? Nah, I wouldn't know the best source for them. Some 4 years ago I started looking at the Eikon terminal data on where ships were heading, the whole Cushing flyover thing each week for inventory levels (But then there's something those guys don't tell you...The EIA forecasters take data from all PAADs, not just Cushing).
It all became gelled into a ball of bullshit. The basics of an instrument like CL and the upstream/downstream flows were too much for me.
You can attempt all the TA you want in CL, but I feel that it is a mostly fundamentally-driven instrument, with a caveat...You must consider OPEC+JMMC+Biden+travel demand+++++.
It's nuts.
My instinct tells me we are at a peak, and we will NOT see $100 oil again in the next few years. But that is IMHO totally. Keep an eye on it and trade accordingly if you wish to pursue it.