Commercial elevation rotators are expensive and a major investment for many amateur radio operators. If you have the interest and the time, there are several possibilities for building your own elevation rotator.
If you search on Google, there are a number of projects available. Here are a few examples:
SatNOGS Rotator v3
Maybe one of the most famous projects from the SatNOGS community.
https://wiki.satnogs.org/SatNOGS_Rotator_v3
Sarcnet Mini Satellite-Antenna Rotator Mk1
Lots of instructions, pictures and design notes.
https://www.sarcnet.org/rotator-mk1.html
N6LN Antenna Rotator/Controller
A a homebrew azimuth/elevation antenna rotator for amateur radio satellite by N6LN, basic configuration was suggested by DO5TY (see below).
DIY AZ/EL Antenna rotator for under 150€
https://tysonpower.de/blog/diy-az-el-antenna-rotator-for-under-150
Also on Youtube:
VK4GHZ Homebrew Satellite Antenna Elevation System
This is a elevation build only.
https://vk4ghz.com/homebrew-satellite-elevation-system/
Saveitforparts DIY Satellite Tracking
A tracker partly built on SARCNET version.
https://saveitforparts.com/2024/03/10/a-cheap-diy-satellite-tracking-mount/
KA6PUW Azimuth/Elevation Rotator for Arrow Satellite Antennas
A tracker mainly built for the Arrow yagi:
https://ka6puw.tripod.com/azimuth1.html
Pawel Rozenek SARCNET version
A SARCNET version from Pawel Rozenek.
https://www.rozenek.com/working-through-amateur-satellites-how-to-make-a-very-cheap-antenna-rotator/