ChinusGomes, Quote ChinusGomes
have both forums and regular pages all on the same sidebar
There are probably not a lot of services like that out there. I guess you could use a free web host with Wordpress + plugins (for example, this one: https://wordpress.org/plugins/asgaros-forum/) but free web hosts often come with limitations and drawbacks. It's also not exactly plug and play like uCoz.
You can also use a service such as https://www.proboards.com/ if you only want a forum, but I don't know how much you can personalize it.
If it was on me, although this costs money and it's not easy to set up, I'd go for a VPS (virtual private server) running Discourse.
ucoz has gotten way worse over the years
Would you like to provide more details on this statement?