What happened?

Should i worry? Any suggestions for a fix? Didnt find anything because i dont know what search terms to use...

Edit: Thanks for your responses. I talked to my brother, he told me the retraction speed was too slow (25mm/s), i changed it to 40mm/s and realized i activated the wrong printer profile. Silly me. Ill do a test print now. Ill look into your suggestions if this wont help.