Clutch/ slave cylinder changed, gears grind/ unable to shift

[Rex Wembley]

Changed the clutch on my 2015 fist. Followed the ford manual, torque specs are correct, used alignment tool, disk is facing proper way, painstakingly bled the clutch and did a neutral reset with the shift linkage upon reassembly. No noise coming from transmission until I go put the car in any gear. R-6th I get a loud grinding, idling is fine prior to trying to put into gear. After couple pumps of the clutch pedal. It got incredibly stiff to the point I had to stand on it to get it to go down, after that it never came back up. Master cylinder was replaced 2k miles ago. Upon waking up this morning, I discovered a puddle of brake fluid under my car despite connections to master and slave being secure and clips still present on their assemblies. Any suggestions?

 

[Zeille]

if i had genuinely no idea, i would start pulling things apart and looking for where the leak is coming from. could it be the clutch master cylinder? slave cylinder? cracked/broken line? dump water over everything that is relatively safe to do so, dry it off, and watch for a leak from there. i don't think it's entirely like watching paint dry
(i say this stuff because I had a 2007 Chevrolet Cobalt & I had a brake fluid leak, so I had to spend lots of time narrowing it down. I went through a lot of water & two master cylinders, but I eventually fixed it)