Enable Google SafeSearch in all the browsers you use. First, you need to make sure your browsers use Google as their default search engine, and then you need to turn on SafeSearch. If you want to prevent access to specific websites and limit your kid's exposure to inappropriate content such as mature games or porn, you can use the parental controls that are built into your device's operating system
There are few third party parental control services such as Bark, NetNanny will provide complete control over all the devices your kids use.
There are both hardware and software solutions to control your home network and your home Wi-Fi. OpenDNS works with your existing router(Internet) to filter internet content. Circle Home Plus is a device and subscription service that pairs with your existing router and lets you pause access to the internet, create time limits, and add content filters to all devices on your home network (including Wi-Fi devices), plus manage phones and tablets outside the home.
If you have an iPhone or iPad, Apple's Screen Time settings let you manage nearly every aspect of your kid's iOS device, including how much time kids spend on individual apps and games and what they download. You can even turn the phone off for specified periods, such as bedtime. There are two ways to enable Screen Time: You can either set it up on your kid's device and password-protect the settings, or you can set up Family Sharing through your Apple account and manage the features from your phone.
Android devices can vary a lot in what they offer, so check your device's settings to see what options you have. If your kid is under 13, you can download Google's Family Link to track and control online activity, including text messaging and social media, using your own phone. (You can use Family Link on teens' devices, but you can't lock the settings.) You can also use Android's Digital Wellbeing settings, which are built into the latest version of the OS. These can help kids become more mindful of the time they're spending online — and hopefully help them cut down. You'll want to help your kid enable the settings that will be most useful on the road to self-regulation.
In addition to blocking specific people, most social media apps let you disable features that could pose some risks for kids. For example, you may be able to turn off chat, restrict conversation to friends only, and hide your child's profile so that it won't show up in search results. Some apps go a step further by letting users control their own use of the app. Instagram's Your Activity feature, for example, shows you how much time you've spent in the app and lets you set limits for yourself. YouTube has a similar feature that reminds users to take a break. TikTok even allows parents to set limits and remotely manage their kids' TikTok account from their phone using its Family Pairing feature. To find out if your kids' favorite apps offer any types of restrictions, go to the app's settings section (usually represented by the gear icon). Unless an app offers passcode protection for its settings (and most don't), your kid can easily reverse them.