Locked Can my ISP tracking me

[Big Data]

hi all 

1- Can my service provider track me even i use VPN like Nord VPN ??

2- can they track My activities what i am I do like site i Visiting or what i downloading ??

3- is they have some soft or hard ware to decrypt my track and decrypt my connection ??

4- i am using nord vpn with obfuscated server is this enough ??

5- can i use nord vpn with tor tor browser ??

6- is the tails system Enough to Privacy can i use it as main system and can i use it to download torrent ??

[itsMe]

@cccc 

your ISP can track you if you use a VPN too,

your ISP can't track you if you use a RDP/VPS