How can I practice speaking Spanish by myself?

You can practice Spanish speaking alone by shadowing audio, narrating what you're doing, recording yourself and answering questions out loud. It's not a full replacement for talking with a person, but it builds the habit of producing Spanish, and that's most of what stops people.

Shadowing

Play a short clip of Spanish and repeat it right after the speaker, copying the rhythm, the stress and the melody. Start with slow, clear audio and a transcript. It trains your mouth, and it forces you to notice what you can't quite hear. Shadowing has its own page, but five minutes a day is enough to start.

For shadowing material, Langtok (my app) lets you slow any short story down, as low as 0.25x, and follow the highlighted words as you repeat. It doesn't check your pronunciation, so you're your own judge.

Narrate your life

This one feels silly and works well. As you do things, say them in Spanish:

Estoy cocinando pasta. (I'm cooking pasta.)
Tengo que salir en diez minutos. (I have to leave in ten minutes.)
No sé qué ponerme hoy. (I don't know what to wear today.)

When you hit a word you don't know, note it and look it up later. That gap list is the most useful thing you'll make, because it's exactly what you'd have needed in a real chat.

Record yourself

Open your phone's voice recorder and talk for one minute about your weekend or your job. Listen back. You'll hear things you didn't notice, like long pauses, English words where you gave up, or sounds you're missing. Do it again a week later on the same topic and compare. Seeing improvement is great for motivation.

Answer questions out loud

Take a list of simple conversation questions, like ¿Qué hiciste el fin de semana? (What did you do at the weekend?) or ¿Cómo es tu trabajo? (What's your job like?), and answer each one aloud, as if someone asked you. You can find questions in many places, or make your own. If the answer is too hard, simplify it.

Retell what you read or heard

After a story, a show or a podcast, summarize it out loud in your own words. Una chica llega a un pueblo y encuentra una carta (A girl arrives in a town and finds a letter). It forces you to use the vocabulary you just met, which helps it stick.

Practice with AI if you want

Typing or talking with a chatbot is an option some people like. It's a low-pressure place to try sentences. I'd treat it as one more tool, not a tutor. There's a separate page on practicing with AI chatbots.

Keep it low pressure

The point of solo practice is that nobody is judging. Don't aim for perfect. Aim for fluent-ish: keep going when you make a mistake. If you stop to correct every error, you're training hesitation.

A 10 minute routine

3 minutes: shadow a clip.
4 minutes: narrate or answer questions out loud.
3 minutes: record a short answer and play it back.

Once the habit is there, add a real person. A weekly chat with a tutor or an exchange partner will catch the mistakes you can't hear yourself, and give you the experience of someone actually answering.