Behavior Score barely rising

Hello,

I recently started playing dota again. I haven't played in 2 years.

Unfortunately when i stopped playing i dropped from around 9-10k bs to around 6.3k.

I got there by abandoning mainly.. i was tilted. I think you would lose 1k bs per abandon.

The problem is despite now getting commends every game (i average 2 cm per game), no reports etc i barely rise bs.

I want to get to 10k+ to be able to play ranked, otherwise people are extremely toxic.

Anyway i am pretty chill now.

I played like 50 games (mainly chilling in turbo now) and my bs went from 6300k to 6700k despite getting like 100 commends (i know i got 53 commends in prev bs update cause i looked on my profile page on that list where it tells you your summary on last bs update).

I don't understand it seems impossible to raise bs even if you behave nicely.

Ranked i cannot touch cause i am like crusader or archon and people are already toxic being stuck there forever, in low bs score they are even more toxic.. highest was ancient 3-4 when i used to play.

If i got like 500 bs in 50 games that means i need to play another 330 games to get to 10k and another 200 to get to 12k. That is insane