Advice for house searching?

Yeah sorry basically what the title says. Getting exhausted looking for a new home to rent after being told our rental contract is up. Been looking for a while and it's extremely difficult. Looking for a 3 bedroom ideally, within the range of like. 1'400 a month, accepting of kids. Thought I'd try Here for any advice, in case there's like, a non mainstream website I'm missing. Trying zoopla and Facebook never really works, they're snapped up in well. Minutes.