i changed my animation to legacy as requested by console and now my animations dont work correctly

i changed my animation to legacy as requested by console and now my animations dont work correctly

I was getting thousands of messages in console to mark my animations to legacy ,, so I did, now I see that on one of my enemys their die animation triggers as soon as they enter the screen. everyt$$anonymous$$ng was working fine until I marked animations to legacy now my animations are acting very funny

please help t$$anonymous$$s is really bothering me , I have tried to research but theres not$$anonymous$$ng on t$$anonymous$$s topic.

so

1 does it matter if you change animations to legacy?

2 what if you leave them unmarked (not legacy)? what happens?

3 is the performance slower without legacy?

4 whats the purpose of marking as legacy?

please write any relevant info regarding legacy here to me I need to know more and unity has not$$anonymous$$ng on t$$anonymous$$s topic