@nulo : First thing, check to see if the current hose is approved for ATF and it's ID, next double check the OD of the pipe the hose slips over, should be ~10mm.
You could buy a new section of a quality GATES bulk Transmission cooler hose (3/8"-9.5mm) and start over using a wider BREEZE clamp or two.
Be careful as there are counterfeit BREEZE clamps on the market.
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Long term what I've done for formed hoses (to prevent kinking in a length of hose that originally was a specific shape) is to search online (GATES, RockAuto, Summit Racing,Toyota other models---) for formed Transmission Fluid (ATF) approved 3/8" ID (9.5mm) cooler hoses for other brands and models, you'll find dozens of shapes and lengths. Original cooler hoses were 10mm but that ID is difficult to find and if you do find something that says it's 10mm ID it may actually be 9.5mm, IME.
Once you identify a formed hose from online searching that looks like it might work (what I've done FWIW) is to order it from a local parts store and physically check it at the counter. Just easier to return on the spot if it won't work. Eventually you'll likely find one that will fit or which can be cut to fit.
One option for a quick fix, push that hose further up on the pipe and add another better quality hose clamp (or two). Those cheapo worm screw Made in Chy-nuh POS clamps are part of the C, C, P's plan to weaken the Free World prior to complete domination.
