I'm not assuming a single thing. That's not even a real bomber. That's modeled after the B21 Raider. The B21 won't enter service for at least 4 years, let alone be seen flying over a battlefield. I'm going to go out on a limb and assume you thought it was a B2 Spirit, hence my original billion dollar comment.

Those approximate F22s are also fake, but are roughly modeled after the F22. However, there is no scenario where 9 F22s would act as a squadron, accompanying a bomber. 2 F22s would accompany such a bomber, albeit at 20-40x the altitude, and with at least 2 F15s equiped with AGM 88 missiles, along with air refueling. IOW, the battlefield is not an air show - one does not simply fly part of a mission over the danger zone. This doesn't even factor in that Russian S600 missiles sit well within range of, and in multiple directions from, Gaza. Capable of X band targeting and optical follow up targeting renders the "stealth" useless, making all of these low and slow flying planes an easy target, if they weren't all shot down by amateurs operating a ZPU.

Thirdly, the USAF - the to-be operator of the B21 - maintains a "high energy" doctrine, wherein there exists no scenario for the use of stealth, strategic bombers and fighters at such altitudes, in hostile territory. Even the F35, to the degree that the USAF manages to squeeze a close air support mission out of it, won't likely be caught flying at such altitudes; and if it does, it'll be moving very quickly and will be most likely shot down by 1980s MANPADs.