Just received android 15 in s21 ultra

one ui 6.1 install karne ke bad display blurry dikh raha he....Lagtahe Samsung ko good by bolne ka wakt aa gaya..Rip Samsung..mobile manufacturing sodke pani puri banana shuru karu .jo banana nehi aata uske pichee na padna hi samjdari hei..i think. *...

What can i do i didn't understand 

Dear samsung , abhi to shayad samsung ka sara eligible model ko oneui 6 update mil suka hai sibay s21, plus and ultra ko sodke...apse ek request he ki abhi keh do ki s21 wale ko update nehi milega.