Sorry, one other app to mention. Orbot
It's a free VPN ran by volunteers and software nerds. There's no subscription. No hassle to it. You start it up, and it just works.
Just to be clear, a VPN isn't going to protect you from everything, but it adds another layer of protection from those who are seeking you out. A couple tips with this:
When Orbot is running, disconnect yourself from Wifi. One of the ways a vpn like this works is similar to getting lost in a crowd. When you're connected to your personal Wifi, someone can see that you're the only one connected to your wifi, and can see that you're using a vpn. However, if you're connected to a cell tower in the area, of which thousands upon thousands of people are talking through, it's harder to pin you down.
Your device's internet isn't going to be as fast.
Youtube might take a few seconds longer. Websites might not load as quick. Some sites straight up won't work because they require your device's personal information to run. Even ads might not show up correctly. Case in point, the other day I was receiving ads in Italian. All of this is because, when you use a VPN, it masks your device's location so that it shows from another location. Where it might be changes every couple of hours or days, but it never remains the same.
Get yourself on an infinite data plan. Disconnecting from wifi means you're running on your own data, which costs more. Yes, it is a little more expensive. However, this helps you take more control of how you use your devices and what is shared on the internet. It gives you the freedom to use your device where you want to, how you want to. Look up local providers in your area, and figure out what you need, and what works best for you for obvious reasons.
Don't be afriad to use privacy apps like Signal and Duckduckgo. Having an extra layer of security does help keep malicious folks away.