suivre
follow (physically, go after)
follow (on social media)
follow (come after, be next in sequence)
Je vais suivre ton compte Instagram.
I'm going to follow your Instagram account.
follow (understand, keep up with someone's reasoning, a discussion, or an explanation)
Je n'arrive pas à suivre ton raisonnement.
I can't follow your reasoning.
take/attend (a course, classes, a training)
Je vais suivre un cours de français ce semestre.
I'm going to take a French class this semester.
follow (comply with or apply advice, rules, instructions)
Il a décidé de suivre les conseils du médecin.
He decided to follow the doctor's advice.
monitor/track (the progress or evolution of something)
L'équipe va suivre l'avancement du projet.
The team will monitor the project's progress.
