Every time I start safari it, opens a set of sites I visited a while ago

These are 5 sites i visited at the same time about two years ago!

I tried changing safari's preferences to have it open with a new window but it doesn't work

Anyone know what this is about?

Something similar happens with the spotify app, it opens at startup when I've changed it a few times to not open until I've clicked on it

is this a problem or is this a Mac thing i don't know about?

Thanks