Nokia 6.1 plus/ Nokia X6 GPS accuracy issue

Hello, I am a Nokia 6.1plus user. I have been facing a GPS accuracy issue on my phone. Whenever I try to record cycling activity with Strava app on my Nokia 6.1 plus phone, it produces incorrect, zigzag data. Moreover, sometimes I don't even find signals during Google map navigation. What's the problem? I heard that Nokia phones have serious GPS accuracy issues. How can find a solution? Please help