tu te sens seul(e)
seul (masc) or seule (fem)To say the word alone in the French language you say seul.
You can say "Je suis seul" in French to express that you are alone.
it means you feel alone, but there are actually lots of people around you
laissez-faire
vivent seules
Je suis seul
to feel happy is 'se sentir heureux' in French.
Laisse-moi tranquille!
To say "leave me alone" in French, you would say "laisse-moi tranquille" pronounced as "less mwah tron-keel".
You can say "Je veux être laissé(e) tranquille" in French to mean "I want to be left alone."
seul à la maison
Je ne suis pas seul.