you don't need a brim or a raft with pla - but you do need to heat the print bed to 60C
Also calibrate a little tighter, you need to get a bit of squeeze on the first layer - if necessary it can quickly be filed off, you also need to print the first layer at round 10-20% of the actual print speed.

We all go through this.

You might also want to invest if some cheap gluesticks. Pla loves stiking to pva :-)

And better quality pla will also help. The really cheap stuff does work, but you will need to implement the above procedures, the good stuff will just sit on a hot printbed with minimal stick and never warp.

What you lose is higher cost you gain back in fewer failed prints.