Kelly_E Which macOS version are you using, Kelly? I will share a link with another browser you can download.
Also consider… if you can stomach it… (carefully) installing Open Core Legacy Patcher on your Mac (I recommend getting some expert Mac help in guiding you through it). This done after first partitioning your Mac, so as to create a new space for installing another version of macOS…
The upshot is you'll be able to run any version of MacOS you like, including the latest, Sequoia.
Since you're using Macbook Pro this will likely run quite well. I presume you have at least 8Gb RAM in your older Pro. and potentially 16Gb?
So two routes to running another browser.
Let me know your current version of macOS, and your Macbook Pro specs, and I'll offer a browser option and confirm a bit more on OCLP.