For those who're planning on tracking everyday fitness activities and don't want to spend a boatload of money, we would recommend getting a Fitbit fitness tracker or smartwatch. Most Fitbits are cheaper than Garmin's wearables and track fitness stats with admirable accuracy.
If you're getting ready for a race, whether it's a running or cycling competition, Garmin watches would be able to help you in training and recovery more efficiently than Fitbits. The Garmin ecosystem is geared towards athletes and is able to provide training insights/tips, something you won't be able to access when using a Fitbit fitness tracker.