There is no need of a personal trainer. you can take the help of fitness tools like Garmin. It can track your every physical activity and statistics recorded during each activity let you analyze your performance and improve on in next time. with Garmin Coach, you get customized workouts that adapt to your ability, personalized coaching advice, and helpful articles and videos.
Along with all the different devices for navigation, outdoor activities, and fitness, the Garmin has also given an application to manage these is called Garmin Express. so you can easily manage your Garmin devices with the help of Garmin express.
You can download Garmin express from the website for free
https://w-garmin.com/express/
https://i-garmin.com/express/