Hello jonnyjm,
I'm sorry to hear that you have lost your entire bankroll - but in all honesty, it seems like the problem lies in your attitude.
over the last year i built up a very nice BR which over the last 4/5weeks is now gone. this wasnt because of tilt. this wasnt because of bad BRM.
and i wont be wasting my time playing micro stakes trying to build a new one. because 0.05/0.10 stakes are just tiney in comparrision to the levle i was succesfully beating, and to start from this levle and build again i dont think my bran can ajust back to it
If you stuck to BRM you would have been back at the micro limits at some point or another - since thats what BRM is. It not just determines when to move up, but also when to move down. If you don't move down in time to save your bankroll then this is just another form of tilt.
You say you have been playing for 8 months... but in all honesty: How many articles have you read? How many videos have you watched? How many hands have you posted in the hand evaluation area? How many coachings have you attended? What have you been doing to work on your game?
Judging by the attitude displayed in your post, it seems you have a lot of leaks, and were most likely on an upswing before.
If you want to play profitable poker - it involves a lot of work - not just a lot of playing.
Best regards
SoyCD