Yes, other networks offer different options.
EE do a package for £50 a month and Three's is now £25. Like I said it's dependent on finding one to suit but o2 don't offer sufficient data quantities to replace fixed BB in my opinion.
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion.
This is not Customer Service so we are unable to help with account specific issues.Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)