So a 2.2 is still a second class degree, and you should still apply to lots of jobs asking for a 2.1, but you may find a lot of places of may auto-reject. Id say a 2.2 will limit opportunities out the gate in the first year or two particularly at larger companies and on formal graduate schemes that said with general direct entry jobs as well as SMEs you may find it easier to get through HR. Once you have 2-3 years experience no one will care as they will look at your working track record and future goals.
In other words, grind like crazy for jobs you want, dont be disheartened if job hunting is painful, and you’ll find great opportunities.
Yes, celebrate your degree. This is important but i don’t think being sore about not achieving everything you wanted is a bad thing either… just use that as motivation.