Hi there,
Yes, it's absolutely possible! Especially for the basics (house-training, recall, walking on a lead, sit, down, etc.).
The key is to be consistent and patient, and to use kind methods based on positive reinforcement. There are plenty of reliable resources available these days (books, videos, online courses).
In fact, it’s actually recommended to get involved in their training yourself, as it will help you build a bond of trust with your dog.
However, getting help from a dog trainer can help you avoid certain mistakes, understand your dog better, or manage specific issues (fears, reactivity, anxiety, aggression...).
Have a good day,
Maëlla
Translated from French
