Comment by rmonvfer

As a Spaniard, this also happens to me. You can either use a VPN or just switch DNS servers to one that doesn’t have anycast nodes in Spain.

Cloudflare’s authoritative DNS uses EDNS Client Subnet (ECS) to return different IP pools based on where the query originates. Spanish resolvers get IPs from a range that La Liga blocks. If your recursive resolver is physically outside Spain (or you use DoH/DoT to tunnel to one), Cloudflare returns a different, unblocked pool.

AdGuard DNS works well for this.