Limiting internet access

[Getrichslow]

Hi this is probably the wrong place but can anyone advise how to limit access to the internet on an android tablet to only allow kids YouTube and not search of any kind ?
The only solution I can find is to disconnect wifi I've tried everything but so long as search is still possible they end up in YouTube & other sites etc.

Should be an Admin setting on your router.

Log into that and set the preferences- Google is your friend if stuck

Thanks I solved it by using a free parental app. Phew. Kids YouTube only from now on.