About the verb "need".

The verb "need" (to) is used both as a simple and modal verb, but I avoid using it as a modal verb, because there are many others suitable modal verbs for expression. Also, somebody said  say that using it as a modal verb is old-fashioned able, that it is no more longer used as a modal verb. I always hear the phrase "I need to" in English movies and films. Maybe using it as a simple verb is a characteristic of for American English? What can do you say about it? I think the verb "need" is very complicated when it comes to using it.

About the verb "need".

The verb "need" (to) is used both as a simple and modal verb, but I avoid using it as modal verb, because there are many others suitable modal verbs for expression. Also, somebody say it is said that using it as a modal verb is old-fashioned, that it is no more longer used as a modal verb. I always hear the phrase "I need to" in English movies and films. Maybe using it as a simple verb is characteristic for of Aamerican English? What can you say about it? I think the verb "need" is very complicated when it comes to using it ("to" is a preposition here, and not the to-infinitive marker, so that's why the gerund is used).

Nice text!

I'm not sure where you heard this information that it's old-fashioned - that's very strange. I've never heard this before, and as a native speaker, I use it myself and hear many people using it, as you mentioned you've heard people using it in movies and on TV. I'd say you needn't worry about avoiding it as a semi-modal verb when it's perfectly fine English (all varieties, not just American) to use it as both a semi-modal and a simple verb.