I admire you for having a go and fixing the car. you are supposed to replace the water pump and timing belt at the same time. To gain access, the engine mount is removed. then the access to the water pump is easier
Great vid, well done. Slow and steady wins the race with these sorts of jobs. Top tip from me (another amateur); buy yourself a USB endoscope with led lights off of amazon/ebay for sub £20. You plug it into your phone to view what it's looking at. It's the most useful piece of equipment for looking into tight dark spaces and seeing what's going on.