What do i do about my previous 401k

I ‘ve been working at my new job since September last year and have 403b and 401k with my employer through Fidelity. I have a previous 401k from my former job through Voya that is worth 30k. What are my options with the previous 401k and if I rollover it, where to? And also I plan of doing withdrawal next yr to buy a house. I know I dont have a lot but from the country where I’m from, there is no such thing as retirement and if there is it’s probably worth like 100-400 USD a month.