You are using a low-end phone released 4 years ago and barely meets the lowest requirements, as revisited last year, so your experience is directly driven by inadequate hardware.
Even a current low-spec phone like the Redmi A3 or the Oppo A5x is at least 2x faster. Time to upgrade if you want a better experience.
Although in FC Mobile 25 I had fewer lags, and that was on a Realme C30s.
I’ve noticed that the graphics look exactly the same as in FC Mobile 25, yet it runs as if the game suddenly requires much heavier graphics (like 1000 MB textures).
It’s literally the same graphics as in FC Mobile 25, but performance is worse.
I’d buy a 120 Hz phone, but I can’t afford one — in my country they cost around 17,000 / 10,000 UAH.
Also, a lot of people in the EU play on budget phones because they simply can’t afford more powerful devices.
And the Realme C30s actually handles games like WoT Blitz and even poorly optimized shooters pretty well.
I hear you but your phone os went out of support a year ago, unless you use a custom rom. So expecting optimisation for an old device with officially unsuported android os is a bit of a stretch.
Your best best is lower graphics to absolute minimum while it still can handle the game.
