Create many forms with loop

Question

Hello I am trying to create several forms from a loop that comes from dynamic elements loaded from the database. However I think I am doing it wrong here is what I have already done. It works more or less but I would like to have the right way to proceed.

Thanks in advance

submitForm: function (e) {
      e.preventDefault();
      e.target.elements.techId.value // OK
      this.selectUser // value is other form not form used button
}

Template

 <div v-for="tech in techs" :key="tech.id" class="col-12 col-lg-3">
            <h3>{{ tech.name }}</h3>
              <form
                name="form_tech"
                method="POST"
                @submit="submitForm"
              >
                <input type="hidden" :value="tech.id" name="techId" id="techId" />
                <select
                  name="select_user"
                  class="form-select"
                  v-model="selectUser"
                >
                  <option value="user_one">user one</option>
                  <option value="user_two">user two</option>
                </select>
                  <button type="submit" >
                    Confirm
                  </button>
              </form>