I agree with most that the vets is probably the best option.
However, I’ve trimmed my Jakes nails at home successfully. Our vet is a pretty long drive (which would be stressful for bun) and the nearby groomers always has dogs and doggy hair everywhere (also stressful for bun).
Today, I had my sister’s fiance sit with one of Jakes blankets on him and hold him so he (Jake) couldn’t hurt himself if he got scared. He’s a scarredy bun (adventurous if food is involved tho, haha!) so my nerves made him twitch around a bit, but having someone else hold him kept him safe and mostly still. I made sure he held him supporting his bum and his back. And we took a break after the toenails and let Jake enjoy a treat.
I highly recommend getting a pair of dog nail clippers instead of the kitty ones or the small animal ones. I spent $7 on small animal clippers when the $1 doggie clippers I got work much betters (better grip, better clip, and a handy safety to measure where the quick is). I also recommend you clip in a VERY well lit area. When I first got Jake, I cut the quick and panicked (bad idea; he sensed it and hid under my bed for an hour before I lured him out with a banana). So now I keep stypic powder and a wet q-tip on hand.
Good luck