Is it hard for traders to get loans/credit?

It is easy to do in the Bahamas...

 

It depends on the jurisdiction and it depends on the bank, but it usually is not easy.

 

So your tradings going well so

 

Yes you do, because paying cash for a house is stupid.

Not optimal use for ones capital. Especially true as a trader.

One solution to the getting-a-mortgage problem is to get the loan while you have full time employment. After you got your mortgage you are free to leave your work and pursue trading full time.