As for the title, I don't have a potentiometer and, as of now, it's out of budget.
That makes the VO2 Max for cycling unavailable, so the watch could not suggest daily workouts.
Is there some kind of workarounds? Or I should just give up on this idea?
For daily suggestions to be calculated, you need a VO2 Max for cycling. To get a VO2 Max you need power information from your rides. To get power information, either directly to your watch/computer or from a supported training app:
Qualifying activities from the following apps can contribute towards your VO2 Max:
Tacx Training
App | Tacx Training Desktop app
Zwift
TrainerRoad
ROUVY
Activities recorded from these apps do not generate a VO2 Max reading by themselves. The activities are post processed using a Garmin device and Garmin Connect to generate a reading. For your VO2 Max to update from a supported fitness app, you must meet these requirements:
The app must be linked to your Garmin Connect account. Tacx apps are linked by default.
Your VO2 Max capable Garmin device must be listed in your Garmin Connect account. This allows the activity recorded from the other app to sync with the device to allow post processing.
Your VO2 Max capable Garmin device must have an activity of the correct activity type saved on it. It is recommended to have a recently recorded activity to provide the most accurate information.
Physio TrueUp must be enabled on your Garmin device (see What is Physio TrueUp?).
If these requirements are met, Garmin Connect will sync the activity data to your Garmin device. The device will then process this data and if conditions are met, an updated VO2 max reading will be generated. If you are using an Edge device, you must sync your device twice for an updated VO2 Max to display in Garmin Connect.
NOTE: Indoor runs completed using a supported third-party app, such as Zwift, can affect your training load and therefore impact your Training Status; however, indoor runs will not populate a VO2 max. No activities, including Indoor Runs, uploaded via third-party apps will generate a Training Effect.
On an indoor bike, some of these apps are capable of giving you a virtual power estimate, without an actual powermeter attached. If your indoor bike is supported, the app would use the speed information from that indoor bike and the incline information from the ride (translating in resistance setting on the indoor bike) to estimate the power. This option is not available for a road bikes
