First print - need advice to make it perfect. pictures in post

pictures https://drive.google.com/open?id=1_0...ZzzUiPFZQ7LB0U
Good day

got my QIDI x max.

Printed the Test tower/tube that came with it and it looked nice.
Then I printed the "Test print" from thingiverse with overhangs, bridging and so on.On this print, several things didnt look so nice and I couldnt read the text.TExt is unreadable. To my eye it looks like the temp was too high?The 3 towers in the corner, the third didnt make it to full length.
They are also round and not square.

Q: whats causing this? Too high temp? too high speed? Nozzle too close to bed?

Then some pictures I took from an ongoing print right now. PRinting with a cubic support. There are some strings here and there. Same print settings.would love some feedback on whats causing this

thanks

regards

settings: PLA
Temp: 190?C, Bed 50?C
Speed 60mm/s
0.2 layer height

there are about a million videos on youtube.
Start there :-)