Hello Andrurok
Thank you for reaching out to Apple Support Communities.
Find My displays a map of where the AirTag, Find My network accessory, or set of AirPods has been observed with you. The red dots show where the unknown item was detected near your iPhone, iPad, or iPod touch. The dashed lines connecting the red dots help indicate the sequence where the item was detected with you. The red dots do not indicate when the item's owner is viewing the item's location.
More information can be found here: What to do if you get an alert that an AirTag, Find My network accessory, or set of AirPods is with you
Hopefully this helps.
Cheers!