Ocean biomes generate on islands or shores. A beach, stony shore or some other biome should  probably generate instead.

Some locations:

Seed: -4190144220771751398
/execute in minecraft:overworld run tp @s 681.46 72.00 4941.21 1010.16 32.34

Seed: -2250025025821470764
/execute in minecraft:overworld run tp @s -135.62 63.00 885.51 -17.49 19.93

Seed: 5954861882540909841
/execute in minecraft:overworld run tp @s -949.90 91.53 108.24 90.94 90.00

Seed: 267231350839513055
/execute in minecraft:overworld run tp @s -397.33 63.57 1327.55 -91.73 25.33