Its difficult if you dont have grass of your own but if you know for sure there are no unvaccinated dogs using it Id be ditching the pads and taking outside for all toilets. Pads only train a dog to toilet inside which is crazy because we dont want that long term. You could buy a patch of turf and that solely outside until pup is vaccinated. I take out every 30 to 40 minutes in the day time, after every sleep, play and meal. Stay with your pup until they go, use a cue word when they go. That way you will be teaching them to toilet on command. Lots of praise when they do go outside. Ive did the above with all my pups and theyve been toilet trained reliably v quickly. Im talking a few weeks max.
The crate training I wouldnt leave a dog to cry, especially not a pup, youl definitely get differing opinions on this but for me it goes against everything I did as a human parent to leave a small baby to cry. We slept next to the crate at night until the pup was happy to be left. That way if they wimpered or cried I could stick my hand through the crate to settle them. It also meant that I knew when to take them out to toilet at night. Out, toilet and straight back in.
The biting, make sure the dog is getting enough sleep, a 9 week old puppy should be sleeping 16 to 18 hours per day. The biting and hyper behaviour will escalate if the pup is over tired. When they bite, offer an alternative, frozen carrot, frozen tied up tea towel, tug toys etc. I found the best thing was to yelp and turn my back on them if they hurt. However do not tell them off for being nibbly, your pup is learning bite inhibition at the moment so its important they learn was is too much and what is ok. Its v normal and their wee teeth are sore.
Finally it does get better, I promise. I have hated puppy hood every time. Its so mentally and physically draining but its so worth it.