Your bitcoin lives on the chain, not in the wallet
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if you have control of your own keys, then even if the infrastructure underlying your wallet goes away, you can go and spin up a wallet in a different location. reapply your keys and your funds are still there like you, you don't your your funds live on the chain, they don't live in the wallet.
Episode 123: Get Off My Chain! (episode page, opens in a new tab) 00:45:57 (play audio from this timestamp, opens in a new tab)
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Summary
If you hold your own keys, losing a wallet's infrastructure only costs you functionality. You can restore the keys elsewhere and the funds are still there.