With a few thousand or even 10s of thousands of sats, opening channels with Mutiny, phoenix or Zeus is a waste of time and will eat through your sats in fees.

If you are just getting started on nostr, nostr:npub12vkcxr0luzwp8e673v29eqjhrr7p9vqq8asav85swaepclllj09sylpugg internal wallet (built into the client) is probably the best. Then learn about self custody as you buy more and upgrade to a better wallet like mutiny, phoenix or Zeus.