The answer to this is for me is to enable 4G auto connect by going to Settings -> Connections -> Mobile Networks -> Network Mode Sim 1/2 and tapping on 4G/3G/2G Auto Connect. As well as resetting APN Networks to default by going to Settings -> Connections -> Mobile Networks -> Access Point Names -> Triple dot at top right corner then pressing Reset to default for the sim you’re using. Lastly, data soft caps can also throttle your connection speed so keep that in mind.