F1 Decides Not to Replace Russian Grand Prix

Though there were multiple replacement options, Formula 1 will not schedule a 23rd race, which would've made for a record season length.

F1 drivers must change tires at least every 18 laps at the Qatar Grand Prix over safety concerns – KGET 17

F1 will no longer race in Russia after terminating contract

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Formula 1 won't replace Russian GP this season, as 22-race calendar confirmed

What the teams said - Race day in Russia

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F1 will not replace Russian GP as 2022 calendar stays at 22 races

Russian Grand Prix 2021: race report and reaction

F1 Drivers Get Small Win As Russian Grand Prix Will Not Be Replaced