What is Reddit's opinion of Wideband Directional Antenna 700-2700 MHz,11 dBi Yagi High Gain 3G/4G/ LTE/Wi-Fi Universal Fixed Mount Directional Antenna for Wilson Cellphone Amplifier/Cellular Signalbooster with N Female Connector?
From 3.5 billion Reddit comments

By popularity on Reddit, this product is:

Ask what room said son is in, and get a Yagi or patch antenna (both directional antenna's) for under $40. It's important that you make the order while using wifi.

A nice Yagi antenna would help.

Point it directly at your nearest Verizon tower.

2x of each of these (or similar):

Cable (get only as long as you absolutely need to connect your modem to your antenna):

And then you’ll need a mast if you don’t already have someplace to mount the antenna.

This one mounts to the side of your house: https://smile.amazon.com/dp/B002GBWLMQ/

Or Menards has the cheapest of these that I’ve found (I use 4x of these for mine): https://www.menards.com/main/p-1444424465912.htm

I also use mounting brackets to the side of my house: https://smile.amazon.com/dp/B010GE4TFG/

Lots of ways to set it up depending on your location but that is what worked for me.

My friend found a 30’ tv antenna on Craigslist for free and used that.

$50 - $100

< $50